Amethyst

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accumulator => n. 1. Archaic term for a register. On-line use of it as a synonym for `register' is a fairly reliable indication that the user has been around for quite a while and/or that the architecture under discussion is quite old. The term in fu...
ACK => /ak/ interj. 1. [from the ASCII mnemonic for 0000110] Acknowledge. Used to register one's presence (compare mainstream *Yo!*). An appropriate response to ping or ENQ. 2. [from the comic strip "Bloom County"] An exclamation of surprised disgust...
ad-hockery => /ad-hok'*r-ee/ [Purdue] n. 1. Gratuitous assumptions made inside certain programs, esp. expert systems, which lead to the appearance of semi-intelligent behavior but are in fact entirely arbitrary. For example, fuzzy-matching input toke...
Ada => n. A {Pascal}-descended language that has been made mandatory for Department of Defense software projects by the Pentagon. Hackers are nearly unanimous in observing that, technically, it is precisely what one might expect given that kind of en...
adger => /aj'r/ [UCLA] vt. To make a bonehead move with consequences that could have been foreseen with a slight amount of mental effort. E.g., "He started removing files and promptly adgered the whole project". Compare {dumbass attack}.
admin => /ad-min'/ n. Short for `administrator'; very commonly used in speech or on-line to refer to the systems person in charge on a computer. Common constructions on this include `sysadmin' and `site admin' (emphasizing the administrator's role as...
ADVENT => /ad'vent/ n. The prototypical computer adventure game, first implemented on the PDP-10 by Will Crowther as an attempt at computer-refereed fantasy gaming, and expanded into a puzzle-oriented game by Don Woods. Now better known as Adventure,...
AI-complete => /A-I k*m-pleet'/ [MIT, Stanford by analogy with `NP-complete' (see NP-)] adj. Used to describe problems or subproblems in AI, to indicate that the solution presupposes a solution to the `strong AI problem' (that is, the synthesis of a ...
AI koans => /A-I koh'anz/ pl.n. A series of pastiches of Zen teaching riddles created by Danny Hillis at the MIT AI Lab around various major figures of the Lab's culture (several are included in appendix A). See also {ha ha only serious}, mu, and {{H...
AIDS => /aydz/ n. Short for A* Infected Disk Syndrome (`A*' is a glob pattern that matches, but is not limited to, Apple), this condition is quite often the result of practicing unsafe SEX. See virus, worm, {Trojan horse}, virgin.
airplane rule => n. "Complexity increases the possibility of failure; a twin-engine airplane has twice as many engine problems as a single-engine airplane." By analogy, in both software and electronics, the rule that simplicity increases robustness (...
airplane rule2 => correspondingly argued that the right way to build reliable systems is to put all your eggs in one basket, after making sure that you've built a really *good* basket. 
aliasing bug => n. A class of subtle programming errors that can arise in code that does dynamic allocation, esp. via `malloc(3)' or equivalent. If more than one pointer addresses (`aliases for') a given hunk of storage, it may happen that the storag...
aliasing bug2 => then referenced through another, which may lead to subtle (and possibly intermittent) lossage depending on the state and the allocation history of the malloc arena. Avoidable by use of allocation strategies that never alias allocated...
aliasing bug3 => higher-level languages, such as LISP, which employ a garbage collector (see GC). Also called a {stale pointer bug}. See also {precedence lossage}, {smash the stack}, {fandango on core}, {memory leak}, {overrun screw}, spam. Historica...
aliasing bug4 => nowadays associated with C programming, it was already in use in a very similar sense in the Algol-60 and FORTRAN communities in the 1960s. 
all-elbows => adj. Of a TSR (terminate-and-stay-resident) IBM PC program, such as the N pop-up calendar and calculator utilities that circulate on BBS systems unsociable. Used to describe a program that rudely steals the resources that it needs witho...
alpha particles => n. See {bit rot}.
ALT => /awlt/ 1. n. The ALT shift key on an IBM PC or clone. 2. [possibly lowercased] n. The `clover' or `Command' key on a Macintosh; use of this term usually reveals that the speaker hacked PCs before coming to the Mac (see also {command key}). Som...
alt bit => /awlt bit/ [from alternate] adj. See {meta bit}.
Aluminum Book => [MIT] n. `Common LISP The Language', by Guy L. Steele Jr. (Digital Press, first edition 1984, second edition 1990). Note that due to a technical screwup some printings of the second edition are actually of a color the author describe...
Aluminum Book2 => also {{book titles}}. 
amoeba => n. Humorous term for the Commodore Amiga personal computer.
amp off => [Purdue] vt. To run in background. From the UNIX shell `&' operator.
amper => n. Common abbreviation for the name of the ampersand (`&', ASCII 0100110) character. See ASCII for other synonyms.
angle brackets => n. Either of the characters `<' (ASCII 0111100) and `>' (ASCII 0111110) (ASCII less-than or greater-than signs). The {Real World} angle brackets used by typographers are actually taller than a less-than or greater-than sign. See bro...
angry fruit salad => n. A bad visual-interface design that uses too many colors. This derives, of course, from the bizarre day-glo colors found in canned fruit salad. Too often one sees similar affects from interface designers using color window syst...
angry fruit salad2 => tendency to create displays that are flashy and attention-getting but uncomfortable for long-term use. 
AOS => 1. /aws/ (East Coast), /ay-os/ (West Coast) [based on a PDP-10 increment instruction] vt.,obs. To increase the amount of something. "AOS the campfire." Usage considered silly, and now obsolete. Now largely supplanted by bump. See SOS. 2. A {Mu...
app => /ap/ n. Short for `application program', as opposed to a systems program. What systems vendors are forever chasing developers to create for their environments so they can sell more boxes. Hackers tend not to think of the things they themselves...
arc => [primarily MSDOS] vt. To create a compressed archive from a group of files using SEA ARC, PKWare PKARC, or a compatible program. Rapidly becoming obsolete as the ARC compression method is falling into disuse, having been replaced by newer comp...
arc wars => [primarily MSDOS] n. {holy wars} over which archiving program one should use. The first arc war was sparked when System Enhancement Associates (SEA) sued PKWare for copyright and trademark infringement on its ARC program. PKWare's PKARC o...
arc wars2 => and speed while largely retaining compatibility (it introduced a new compression type that could be disabled for backward-compatibility). PKWare settled out of court to avoid enormous legal costs (both SEA and PKWare are small companies)...
arc wars3 => of PKARC was changed to PKPAK. The public backlash against SEA for bringing suit helped to hasten the demise of ARC as a standard when PKWare and others introduced new, incompatible archivers with better compression algorithms. 
archive => n. 1. A collection of several files bundled into one file by a program such as `ar(1)', `tar(1)', `cpio(1)', or arc for shipment or archiving (sense 2). See also {tar and feather}. 2. A collection of files or archives (sense 1) made availa...
arena => [UNIX] n. The area of memory attached to a process by `brk(2)' and `sbrk(2)' and used by `malloc(3)' as dynamic storage. So named from a semi-mythical `malloc corrupt arena' message supposedly emitted when some early versions became terminal...
arg => /arg/ n. Abbreviation for `argument' (to a function), used so often as to have become a new word (like `piano' from `pianoforte'). "The sine function takes 1 arg, but the arc-tangent function can take either 1 or 2 args." Compare param, parm, ...
armor-plated => n. Syn. for bulletproof.
asbestos => adj. Used as a modifier to anything intended to protect one from flames. Important cases of this include {asbestos longjohns} and {asbestos cork award}, but it is used more generally.
asbestos cork award => n. Once, long ago at MIT, there was a flamer so consistently obnoxious that another hacker designed, had made, and distributed posters announcing that said flamer had been nominated for the `asbestos cork award'. Persons in any...
asbestos cork award2 => application of the cork should consult the etymology under flame. Since then, it is agreed that only a select few have risen to the heights of bombast required to earn this dubious dignity --- but there is no agreement on *whi...
asbestos longjohns => n. Notional garments often donned by USENET posters just before emitting a remark they expect will elicit flamage. This is the most common of the asbestos coinages. Also `asbestos underwear', `asbestos overcoat', etc.
attoparsec => n. `atto-' is the standard SI prefix for multiplication by 10^-18. A parsec (parallax-second) is 3.26 light-years; an attoparsec is thus 3.26 * 10^-18 light years, or about 3.1 cm (thus, 1 attoparsec/microfortnight equals about 1 inch/s...
autobogotiphobia => /aw'to-boh-got`*-foh'bee-*/ n. See bogotify.
automagically => /aw-toh-maj'i-klee/ or /aw-toh-maj'i-k*l-ee/ adv. Automatically, but in a way that, for some reason (typically because it is too complicated, or too ugly, or perhaps even too trivial), the speaker doesn't feel like explaining to you....
avatar => [CMU, Tektronix] n. Syn. root, superuser. There are quite a few UNIX machines on which the name of the superuser account is `avatar' rather than `root'. This quirk was originated by a CMU hacker who disliked the term `superuser', and was pr...
awk => 1. n. [UNIX techspeak] An interpreted language for massaging text data developed by Alfred Aho, Peter Weinberger, and Brian Kernighan (the name is from their initials). It is characterized by C-like syntax, a declaration-free approach to varia...
backbone cabal => n. A group of large-site administrators who pushed through the {Great Renaming} and reined in the chaos of USENET during most of the 1980s. The cabal {mailing list} disbanded in late 1988 after a bitter internal catfight, but the ne...
backbone site => n. A key USENET and email site; one that processes a large amount of third-party traffic, especially if it is the home site of any of the regional coordinators for the USENET maps. Notable backbone sites as of early 1991 include uune...
backbone site2 => University, UC Berkeley, DEC's Western Research Laboratories, Ohio State University, and the University of Texas. Compare {rib site}, {leaf site}. 
backgammon => See bignum, moby, and pseudoprime.
background => n.,adj.,vt. To do a task `in background' is to do it whenever foreground matters are not claiming your undivided attention, and `to background' something means to relegate it to a lower priority. "For now, we'll just print a list of nod...
backspace and overstrike => interj. Whoa! Back up. Used to suggest that someone just said or did something wrong. Common among APL programmers.
backward combatability => /bak'w*rd k*m-bat'*-bil'*-tee/ [from `backward compatibility'] n. A property of hardware or software revisions in which previous protocols, formats, and layouts are discarded in favor of `new and improved' protocols, formats...
backward combatability2 => making the transition between major releases. When the change is so drastic that the old formats are not retained in the new version, it is said to be `backward combatable'. See {flag day}. 
BAD => /B-A-D/ [IBM acronym, `Broken As Designed'] adj. Said of a program that is bogus because of bad design and misfeatures rather than because of bugginess. See {working as designed}.
Bad Thing => [from the 1930 Sellar & Yeatman parody `1066 And All That'] n. Something that can't possibly result in improvement of the subject. This term is always capitalized, as in "Replacing all of the 9600-baud modems with bicycle couriers would ...
Bad Thing2 => Thing}. British correspondents confirm that {Bad Thing} and {Good Thing} (and prob. therefore {Right Thing} and {Wrong Thing}) come from the book referenced in the etymology, which discusses rulers who were Good Kings but Bad Things. Th...
Bad Thing3 => mainstream idiom on the British side of the pond. 
bag on the side => n. An extension to an established hack that is supposed to add some functionality to the original. Usually derogatory, implying that the original was being overextended and should have been thrown away, and the new product is ugly,...
bag on the side2 => phrase, `to hang a bag on the side [of]'. "C++? That's just a bag on the side of C ...." "They want me to hang a bag on the side of the accounting system." 
bagbiter => /bag'bit-*r/ n. 1. Something, such as a program or a computer, that fails to work, or works in a remarkably clumsy manner. "This text editor won't let me make a file with a line longer than 80 characters! What a bagbiter!" 2. A person who...
bamf => /bamf/ 1. [from old X-Men comics] interj. Notional sound made by a person or object teleporting in or out of the hearer's vicinity. Often used in {virtual reality} (esp. MUD) electronic fora when a character wishes to make a dramatic entrance...
banana label => n. The labels often used on the sides of macrotape reels, so called because they are shaped roughly like blunt-ended bananas. This term, like macrotapes themselves, is still current but visibly headed for obsolescence.
banana problem => n. [from the story of the little girl who said "I know how to spell `banana', but I don't know when to stop"]. Not knowing where or when to bring a production to a close (compare {fencepost error}). One may say `there is a banana pr...
banana problem2 => defined or incorrect termination conditions, or in discussing the evolution of a design that may be succumbing to featuritis (see also {creeping elegance}, {creeping featuritis}). See item 176 under HAKMEM, which describes a banana...
banana problem3 => implementation.bandwidth n. 1. Used by hackers in a generalization of its technical meaning as the volume of information per unit time that a computer, person, or transmission medium can handle. "Those are amazing graphics, but I m...
banana problem4 => bandwidth, I guess." Compare low-bandwidth. 2. Attention span. 3. On USENET, a measure of network capacity that is often wasted by people complaining about how items posted by others are a waste of bandwidth. 
bang => 1. n. Common spoken name for `!' (ASCII 0100001), especially when used in pronouncing a {bang path} in spoken hackish. In {elder days} this was considered a CMUish usage, with MIT and Stanford hackers preferring excl or shriek; but the spread...
bang on => vt. To stress-test a piece of hardware or software "I banged on the new version of the simulator all day yesterday and it didn't crash once. I guess it is ready to release." The term {pound on} is synonymous.
bang path => n. An old-style UUCP electronic-mail address specifying hops to get from some assumed-reachable location to the addressee, so called because each hop is signified by a bang sign. Thus, for example, the path ...!bigsite!foovax!barbox!me d...
bang path2 => to machine bigsite (presumably a well-known location accessible to everybody) and from there through the machine foovax to the account of user me on barbox. In the bad old days of not so long ago, before autorouting mailers became commo...
bang path3 => compound bang addresses using the { } convention (see glob) to give paths from *several* big machines, in the hopes that one's correspondent might be able to get mail to one of them reliably (example ...!{seismo, ut-sally, ihnp4}!rice!b...
bang path4 => 10 hops were not uncommon in 1981. Late-night dial-up UUCP links would cause week-long transmission times. Bang paths were often selected by both transmission time and reliability, as messages would often get lost. See {{Internet addres...
banner => n. 1. The title page added to printouts by most print spoolers (see spool). Typically includes user or account ID information in very large character-graphics capitals. Also called a `burst page', because it indicates where to burst (tear a...
bar => /bar/ n. 1. The second metasyntactic variable, after foo and before baz. "Suppose we have two functions FOO and BAR. FOO calls BAR...." 2. Often appended to foo to produce foobar.
bare metal => n. 1. New computer hardware, unadorned with such snares and delusions as an {operating system}, an HLL, or even assembler. Commonly used in the phrase `programming on the bare metal', which refers to the arduous work of {bit bashing} ne...
bare metal2 => for a new machine. Real bare-metal programming involves things like building boot proms and BIOS chips, implementing basic monitors used to test device drivers, and writing the assemblers that will be used to write the compiler back en...
bare metal3 => real development environment. 2. `Programming on the bare metal' is also used to describe a style of hand-hacking that relies on bit-level peculiarities of a particular hardware design, esp. tricks for speed and space optimization that...
bare metal4 => overlapping instructions (or, as in the famous case described in appendix A, interleaving of opcodes on a magnetic drum to minimize fetch delays due to the device's rotational latency). This sort of thing has become less common as the ...
bare metal5 => and machine resources have changed, but is still found in heavily constrained environments such as industrial embedded systems. See {real programmer}. In the world of personal computing, bare metal programming (especially in sense 1 bu...
bare metal6 => considered a {Good Thing}, or at least a necessary thing (because these machines have often been sufficiently slow and poorly designed to make it necessary; see ill-behaved). There, the term usually refers to bypassing the BIOS or OS i...
bare metal7 => application to directly access device registers and machine addresses. "To get 19.2 kilobaud on the serial port, you need to get down to the bare metal." People who can do this sort of thing are held in high regard. 
barf => /barf/ [from mainstream slang meaning `vomit'] 1. interj. Term of disgust. This is the closest hackish equivalent of the Val\-speak "gag me with a spoon". (Like, euwww!) See bletch. 2. vi. To say "Barf!" or emit some similar expression of dis...
barfulation => /bar`fyoo-lay'sh*n/ interj. Variation of barf used around the Stanford area. An exclamation, expressing disgust. On seeing some particularly bad code one might exclaim, "Barfulation! Who wrote this, Quux?"
barfulous => /bar'fyoo-l*s/ adj. (alt. `barfucious', /bar-fyoo-sh*s/) Said of something that would make anyone barf, if only for esthetic reasons.
baroque => adj. Feature-encrusted; complex; gaudy; verging on excessive. Said of hardware or (esp.) software designs, this has many of the connotations of elephantine or monstrosity but is less extreme and not pejorative in itself. "Metafont even has...
BartleMUD => /bar'tl-muhd/ n. Any of the MUDs derived from the original MUD game by Richard Bartle (see MUD). BartleMUDs are noted for their (usually slightly offbeat) humor, dry but friendly syntax, and lack of adjectives in object descriptions, so ...
BASIC => n. A programming language, originally designed for Dartmouth's experimental timesharing system in the early 1960s, which has since become the leading cause of brain-damage in proto-hackers. This is another case (like Pascal) of the bad thing...
batch => adj. 1. Non-interactive. Hackers use this somewhat more loosely than the traditional technical definitions justify; in particular, switches on a normally interactive program that prepare it to receive non-interactive command input are often ...
bathtub curve => n. Common term for the curve (resembling an end-to-end section of one of those claw-footed antique bathtubs) that describes the expected failure rate of electronics with time initially high, dropping to near 0 for most of the system'...
bathtub curve2 => `tires out'. See also {burn-in period}, {infant mortality}. 
baud => /bawd/ [simplified from its technical meaning] n. Bits per second. Hence kilobaud or Kbaud, thousands of bits per second. The technical meaning is `level transitions per second'; this coincides with bps only for two-level modulation with no f...
baud barf => /bawd barf/ n. The garbage one gets on the monitor when using a modem connection with some protocol setting (esp. line speed) incorrect, or when someone picks up a voice extension on the same line, or when really bad line noise disrupts ...
baud barf2 => completely random, by the way; hackers with a lot of serial-line experience can usually tell whether the device at the other end is expecting a higher or lower speed than the terminal is set to. *Really* experienced ones can identify pa...
baz => /baz/ [Stanford corruption of bar] n. 1. The third metasyntactic variable, after foo and bar and before quux (or, occasionally, `qux'; or local idiosyncracies like `rag', `zowie', etc.). "Suppose we have three functions FOO,BAR, and BAZ. FOO c...
bboard => /bee'bord/ [contraction of `bulletin board'] n. 1. Any electronic bulletin board; esp. used of BBS systems running on personal micros, less frequently of a USENET newsgroup (in fact, use of the term for a newsgroup generally marks one eithe...
BBS => /B-B-S/ [acronym, `Bulletin Board System'] n. An electronic bulletin board system; that is, a message database where people can log in and leave broadcast messages for others grouped (typically) into {topic group}s. Thousands of local BBS syst...
beam => [from Star Trek Classic's "Beam me up, Scotty!"] vt. To transfer softcopy of a file electronically; most often in combining forms such as `beam me a copy' or `beam that over to his site'. Compare blast, snarf, BLT.
beanie key => [Mac users] n. See {command key}.
beep => n.,v. Syn. feep. This term seems to be preferred among micro hobbyists.
beige toaster => n. A Macintosh. See toaster; compare Macintrash, maggotbox.
bells and whistles => [by analogy with the toyboxes on theater organs] n. Features added to a program or system to make it more flavorful from a hacker's point of view, without necessarily adding to its utility for its primary function. Distinguished...
bells and whistles2 => to attract users. "Now that we've got the basic program working, let's go back and add some bells and whistles." No one seems to know what distinguishes a bell from a whistle. 
bells, whistles, and gongs => n. A standard elaborated form of {bells and whistles}; typically said with a pronounced and ironic accent on the `gongs'.
benchmark => [techspeak] n. An inaccurate measure of computer performance. "In the computer industry, there are three kinds of lies lies, damn lies, and benchmarks." Well-known ones include Whetstone, Dhrystone, Rhealstone (see h), the Gabriel LISP b...
Berkeley Quality Software => adj. (often abbreviated `BQS') Term used in a pejorative sense to refer to software that was apparently created by rather spaced-out hackers late at night to solve some unique problem. It usually has nonexistent, incomple...
Berkeley Quality Software2 => been tested on at least two examples, and core dumps when anyone else attempts to use it. This term was frequently applied to early versions of the `dbx(1)' debugger. See also Berzerkeley. 
berklix => /berk'liks/ n.,adj. [contraction of `Berkeley UNIX'] See BSD. Not used at Berkeley itself. May be more common among suits attempting to sound like cognoscenti than among hackers, who usually just say `BSD'.
berserking => vi. A MUD term meaning to gain points *only* by killing other players and mobiles (non-player characters). Hence, a Berserker-Wizard is a player character that has achieved enough points to become a wizard, but only by killing other cha...
Berzerkeley => /b*r-zer'klee/ [from `berserk', via the name of a now-deceased record label] n. Humorous distortion of `Berkeley' used esp. to refer to the practices or products of the BSD UNIX hackers. See {software bloat}, Missed'em-five, {Berkeley ...
beta => /bay't*/, /be't*/ or (Commonwealth) /bee't*/ n. 1. In the {Real World}, software often goes through two stages of testing Alpha (in-house) and Beta (out-house?). Software is said to be `in beta'. 2. Anything that is new and experimental is in...
BFI => /B-F-I/ n. See {brute force and ignorance}. Also encountered in the variant `BFMI', `brute force and *massive* ignorance'.
bible => n. 1. One of a small number of fundamental source books such as Knuth and K&R. 2. The most detailed and authoritative reference for a particular language, operating system, or other complex software system.
BiCapitalization => n. The act said to have been performed on trademarks (such as NeXT, NeWS, VisiCalc, FrameMaker, TK!solver, EasyWriter) that have been raised above the ruck of common coinage by nonstandard capitalization. Too many marketroid types...
BIFF => /bif/ [USENET] n. The most famous pseudo, and the prototypical newbie. Articles from BIFF are characterized by all uppercase letters sprinkled liberally with bangs, typos, `cute' misspellings (EVRY BUDY LUVS GOOD OLD BIFF CUZ HE"S A K00L DOOD...
biff => /bif/ vt. To notify someone of incoming mail. From the BSD utility `biff(1)', which was in turn named after the implementor's dog (it barked whenever the mailman came). No relation to BIFF.
Big Gray Wall => n. What faces a VMS user searching for documentation. A full VMS kit comes on a pallet, the documentation taking up around 15 feet of shelf space before the addition of layered products such as compilers, databases, multivendor netwo...
Big Gray Wall2 => Recent (since VMS version 5) DEC documentation comes with gray binders; under VMS version 4 the binders were orange (`big orange wall'), and under version 3 they were blue. See VMS. 
big iron => n. Large, expensive, ultra-fast computers. Used generally of number-crunching supercomputers such as Crays, but can include more conventional big commercial IBMish mainframes. Term of approval; compare {heavy metal}, oppose dinosaur.
Big Red Switch => [IBM] n. The power switch on a computer, esp. the `Emergency Pull' switch on an IBM mainframe or the power switch on an IBM PC where it really is large and red. "This !@%$% {bitty box} is hung again; time to hit the Big Red Switch."...
Big Red Switch2 => tune with the company's passion for TLAs, this is often acronymized as `BRS' (this has also become established on FidoNet and in the PC clone world). It is alleged that the emergency pull switch on an IBM 360/91 actually fired a no...
Big Red Switch3 => power feed; the BRSes on more recent machines physically drop a block into place so that they can't be pushed back in. People get fired for pulling them, especially inappropriately (see also molly-guard). Compare {power cycle}, {th...
the Big Room => n. The extremely large room with the blue ceiling and intensely bright light (during the day) or black ceiling with lots of tiny night-lights (during the night) found outside all computer installations. "He can't come to the phone rig...
big win => n. Serendipity. "Yes, those two physicists discovered high-temperature superconductivity in a batch of ceramic that had been prepared incorrectly according to their experimental schedule. Small mistake; big win!" See {win big}.
big-endian => [From Swift's `Gulliver's Travels' via the famous paper `On Holy Wars and a Plea for Peace' by Danny Cohen, USC/ISI IEN 137, dated April 1, 1980] adj. 1. Describes a computer architecture in which, within a given multi-byte numeric repr...
bignum => /big'nuhm/ [orig. from MIT MacLISP] n. 1. [techspeak] A multiple-precision computer representation for very large integers. More generally, any very large number. "Have you ever looked at the United States Budget? There's bignums for you!" ...
bigot => n. A person who is religiously attached to a particular computer, language, operating system, editor, or other tool (see {religious issues}). Usually found with a specifier; thus, `cray bigot', {ITS bigot}, `APL bigot', `VMS bigot', {Berkele...
bit => [from the mainstream meaning and `Binary digIT'] n. 1. [techspeak] The unit of information; the amount of information obtained by asking a yes-or-no question for which the two outcomes are equally probable. 2. [techspeak] A computational quant...
bit bang => n. Transmission of data on a serial line, when accomplished by rapidly tweaking a single output bit at the appropriate times. The technique is a simple loop with eight OUT and SHIFT instruction pairs for each byte. Input is more interesti...
bit bang2 => and output at the same time) is one way to separate the real hackers from the wannabees. Bit bang was used on certain early models of Prime computers, presumably when UARTs were too expensive, and on archaic Z80 micros with a Zilog PIO b...
bit bang3 => instance of the {cycle of reincarnation}, this technique is now (1991) coming back into use on some RISC architectures because it consumes such an infinitesimal part of the processor that it actually makes sense not to have a UART. 
bit bashing => n. (alt. `bit diddling' or {bit twiddling}) Term used to describe any of several kinds of low-level programming characterized by manipulation of bit, flag, nybble, and other smaller-than-character-sized pieces of data; these include lo...
bit bashing2 => encryption algorithms, checksum and error-correcting codes, hash functions, some flavors of graphics programming (see bitblt), and assembler/compiler code generation. May connote either tedium or a real technical challenge (more usual...
bit bashing3 => decoding for the new tape driver looks pretty solid but the bit-bashing for the control registers still has bugs." See also {bit bang}, {mode bit}. 
bit bucket => n. 1. The universal data sink (originally, the mythical receptacle used to catch bits when they fall off the end of a register during a shift instruction). Discarded, lost, or destroyed data is said to have `gone to the bit bucket'. On ...
bit bucket2 => /dev/null. Sometimes amplified as `the Great Bit Bucket in the Sky'. 2. The place where all lost mail and news messages eventually go. The selection is performed according to {Finagle's Law}; important mail is much more likely to end u...
bit bucket3 => mail, which has an almost 100% probability of getting delivered. Routing to the bit bucket is automatically performed by mail-transfer agents, news systems, and the lower layers of the network. 3. The ideal location for all unwanted ma...
bit bucket4 => article to the bit bucket." Such a request is guaranteed to overflow one's mailbox with flames. 4. Excuse for all mail that has not been sent. "I mailed you those figures last week; they must have ended in the bit bucket." Compare {bla...
bit bucket5 => in jest. It is based on the fanciful notion that bits are objects that are not destroyed but only misplaced. This appears to have been a mutation of an earlier term `bit box', about which the same legend was current; old-time hackers a...
bit bucket6 => told that when the CPU stored bits into memory it was actually pulling them `out of the bit box'. See also {chad box}. Another variant of this legend has it that, as a consequence of the `parity preservation law', the number of 1 bits ...
bit bucket7 => equal the number of 0 bits. Any imbalance results in bits filling up the bit bucket. A qualified computer technician can empty a full bit bucket as part of scheduled maintenance. 
bit decay => n. See {bit rot}. People with a physics background tend to prefer this one for the analogy with particle decay. See also computron, {quantum bogodynamics}.
bit rot => n. Also {bit decay}. Hypothetical disease the existence of which has been deduced from the observation that unused programs or features will often stop working after sufficient time has passed, even if `nothing has changed'. The theory exp...
bit rot2 => were radioactive. As time passes, the contents of a file or the code in a program will become increasingly garbled. There actually are physical processes that produce such effects (alpha particles generated by trace radionuclides in ceram...
bit rot3 => change the contents of a computer memory unpredictably, and various kinds of subtle media failures can corrupt files in mass storage), but they are quite rare (and computers are built with error-detecting circuitry to compensate for them)...
bit rot4 => hackers that cosmic rays are among the causes of such events turns out to be a myth; see the {cosmic rays} entry for details. The term {software rot} is almost synonymous. Software rot is the effect, bit rot the notional cause. 
bit twiddling => n. 1. (pejorative) An exercise in tuning in which incredible amounts of time and effort go to produce little noticeable improvement, often with the result that the code has become incomprehensible. 2. Aimless small modification to a ...
bit twiddling2 => goal. 3. Approx. syn. for {bit bashing}; esp. used for the act of frobbing the device control register of a peripheral in an attempt to get it back to a known state. 
bit-paired keyboard => n. obs. (alt. `bit-shift keyboard') A non-standard keyboard layout that seems to have originated with the Teletype ASR-33 and remained common for several years on early computer equipment. The ASR-33 was a mechanical device (se...
bit-paired keyboard2 => generate the character codes from keystrokes was by some physical linkage. The design of the ASR-33 assigned each character key a basic pattern that could be modified by flipping bits if the SHIFT or the CTRL key was pressed. ...
bit-paired keyboard3 => more of a Rube Goldberg kluge than it already was, the design had to group characters that shared the same basic bit pattern on one key. This is why the characters !"#$%&'() appear where they do on a Teletype (thankfully, they...
bit-paired keyboard4 => was *not* the weirdest variant of the QWERTY layout widely seen, by the way; that prize should probably go to one of several (differing) arrangements on IBM's even clunkier 026 and 029 card punches. When electronic terminals b...
bit-paired keyboard5 => there was no agreement in the industry over how the keyboards should be laid out. Some vendors opted to emulate the Teletype keyboard, while others used the flexibility of electronic circuitry to make their product look like a...
bit-paired keyboard6 => alternatives became known as `bit-paired' and `typewriter-paired' keyboards. To a hacker, the bit-paired keyboard seemed far more logical --- and because most hackers in those days had never learned to touch-type, there was li...
bit-paired keyboard7 => users to adapt keyboards to the typewriter standard. The doom of the bit-paired keyboard was the large-scale introduction of the computer terminal into the normal office environment, where out-and-out technophobes were expecte...
bit-paired keyboard8 => `typewriter-paired' standard became universal, `bit-paired' hardware was quickly junked or relegated to dusty corners, and both terms passed into disuse. 
bitblt => /bit'blit/ n. [from BLT, q.v.] 1. Any of a family of closely related algorithms for moving and copying rectangles of bits between main and display memory on a bit-mapped device, or between two areas of either main or display memory (the req...
BITNET => /bit'net/ [acronym Because It's Time NETwork] n. Everybody's least favorite piece of the network (see {network, the}). The BITNET hosts are a collection of IBM dinosaurs and VAXen (the latter with lobotomized comm hardware) that communicate...
bits => n.pl. 1. Information. Examples "I need some bits about file formats." ("I need to know about file formats.") Compare {core dump}, sense 4. 2. Machine-readable representation of a document, specifically as contrasted with paper "I have only a ...
bitty box => /bit'ee boks/ n. 1. A computer sufficiently small, primitive, or incapable as to cause a hacker acute claustrophobia at the thought of developing software for it. Especially used of small, obsolescent, single-tasking-only personal machin...
bitty box2 => Sinclair, VIC-20, TRS-80, or IBM PC. 2. [Pejorative] More generally, the opposite of `real computer' (see {Get a real computer!}). See also mess-dos, toaster, and toy. 
bixie => /bik'see/ n. Variant emoticons used on BIX (the Byte Information eXchange). The smiley bixie is <@_@>, apparently intending to represent two cartoon eyes and a mouth. A few others have been reported.
black art => n. A collection of arcane, unpublished, and (by implication) mostly ad-hoc techniques developed for a particular application or systems area (compare {black magic}). VLSI design and compiler code optimization were (in their beginnings) c...
black art2 => art; as theory developed they became {deep magic}, and once standard textbooks had been written, became merely {heavy wizardry}. The huge proliferation of formal and informal channels for spreading around new computer-related technologi...
black art3 => made both the term `black art' and what it describes less common than formerly. See also {voodoo programming}. 
black hole => n. When a piece of email or netnews disappears mysteriously between its origin and destination sites (that is, without returning a {bounce message}) it is commonly said to have `fallen into a black hole'. "I think there's a black hole a...
black hole2 => site foovax has been dropping a lot of stuff on the floor lately (see {drop on the floor}). The implied metaphor of email as interstellar travel is interesting in itself. Compare {bit bucket}. 
black magic => n. A technique that works, though nobody really understands why. More obscure than {voodoo programming}, which may be done by cookbook. Compare also {black art}, {deep magic}, and {magic number} (sense 2).
blast => 1. vt.,n. Synonym for BLT, used esp. for large data sends over a network or comm line. Opposite of snarf. Usage uncommon. The variant `blat' has been reported. 2. vt. [HP/Apollo] Synonymous with nuke (sense 3). Sometimes the message `Unable ...
blat => n. 1. Syn. blast, sense 1. 2. See thud.
bletch => /blech/ [from Yiddish/German `brechen', to vomit, poss. via comic-strip exclamation `blech'] interj. Term of disgust. Often used in "Ugh, bletch". Compare barf.
bletcherous => /blech'*-r*s/ adj. Disgusting in design or function; esthetically unappealing. This word is seldom used of people. "This keyboard is bletcherous!" (Perhaps the keys don't work very well, or are misplaced.) See losing, cretinous, bagbit...
blinkenlights => /blink'*n-litz/ n. Front-panel diagnostic lights on a computer, esp. a dinosaur. Derives from the last word of the famous blackletter-Gothic sign in mangled pseudo-German that once graced about half the computer rooms in the English-...
blit => /blit/ vt. 1. To copy a large array of bits from one part of a computer's memory to another part, particularly when the memory is being used to determine what is shown on a display screen. "The storage allocator picks through the table and co...
blitter => /blit'r/ n. A special-purpose chip or hardware system built to perform blit operations, esp. used for fast implementation of bit-mapped graphics. The Commodore Amiga and a few other micros have these, but in 1991 the trend is away from the...
blivet => /bliv'*t/ [allegedly from a World War II military term meaning "ten pounds of manure in a five-pound bag"] n. 1. An intractable problem. 2. A crucial piece of hardware that can't be fixed or replaced if it breaks. 3. A tool that has been ha...
block => [from process scheduling terminology in OS theory] 1. vi. To delay or sit idle while waiting for something. "We're blocking until everyone gets here." Compare busy-wait. 2. `block on' vt. To block, waiting for (something). "Lunch is blocked ...
block transfer computations => n. From the television series "Dr. Who", in which it referred to computations so fiendishly subtle and complex that they could not be performed by machines. Used to refer to any task that should be expressible as an alg...
blow an EPROM => /bloh *n ee'prom/ v. (alt. `blast an EPROM', `burn an EPROM') To program a read-only memory, e.g. for use with an embedded system. This term arises because the programming process for the Programmable Read-Only Memories (PROMs) that ...
blow an EPROM2 => Programmable Read-Only Memories (EPROMs) involved intentionally blowing tiny electrical fuses on the chip. Thus, one was said to `blow' (or `blast') a PROM, and the terminology carried over even though the write process on EPROMs is...
blow away => vt. To remove (files and directories) from permanent storage, generally by accident. "He reformatted the wrong partition and blew away last night's netnews." Oppose nuke.
blow out => vi. Of software, to fail spectacularly; almost as serious as {crash and burn}. See {blow past}, {blow up}.
blow past => vt. To {blow out} despite a safeguard. "The server blew past the 5K reserve buffer."
blow up => vi. 1. [scientific computation] To become unstable. Suggests that the computation is diverging so rapidly that it will soon overflow or at least go nonlinear. 2. Syn. {blow out}.
BLT => /B-L-T/, /bl*t/ or (rarely) /belt/ n.,vt. Synonym for blit. This is the original form of blit and the ancestor of bitblt. It referred to any large bit-field copy or move operation (one resource-intensive memory-shuffling operation done on pre-...
Blue Book => n. 1. Informal name for one of the three standard references on the page-layout and graphics-control language PostScript (`PostScript Language Tutorial and Cookbook', Adobe Systems, Addison-Wesley 1985, QA76.73.P67P68, ISBN 0-201-10179-3...
Blue Book2 => known as the {Green Book} and {Red Book}. 2. Informal name for one of the three standard references on Smalltalk `Smalltalk-80 The Language and its Implementation', David Robson, Addison-Wesley 1983, QA76.8.S635G64, ISBN 0-201-11371-63 ...
Blue Book3 => and red books). 3. Any of the 1988 standards issued by the CCITT's ninth plenary assembly. Until now, they have changed color each review cycle (1984 was {Red Book}, 1992 would be {Green Book}); however, it is rumored that this conventi...
Blue Book4 => 1992. These include, among other things, the X.400 email spec and the Group 1 through 4 fax standards. See also {{book titles}}. 
Blue Glue => [IBM] n. IBM's SNA (Systems Network Architecture), an incredibly losing and bletcherous communications protocol widely favored at commercial shops that don't know any better. The official IBM definition is "that which binds blue boxes to...
Blue Glue2 => loathing}. It may not be irrelevant that {Blue Glue} is the trade name of a 3M product that is commonly used to hold down the carpet squares to the removable panel floors common in {dinosaur pens}. A correspondent at U. Minn. reports th...
Blue Glue3 => 80 bottles of the stuff hanging about, so they often refer to any messy work to be done as `using the blue glue'. 
blue goo => n. Term for `police' nanobots intended to prevent {gray goo}, denature hazardous waste, destroy pollution, put ozone back into the stratosphere, prevent halitosis, and promote truth, justice, and the American way, etc. See {nanotechnology...
BNF => /B-N-F/ n. 1. [techspeak] Acronym for `Backus-Naur Form', a metasyntactic notation used to specify the syntax of programming languages, command sets, and the like. Widely used for language descriptions but seldom documented anywhere, so that i...
boa => [IBM] n. Any one of the fat cables that lurk under the floor in a {dinosaur pen}. Possibly so called because they display a ferocious life of their own when you try to lay them straight and flat after they have been coiled for some time. It is...
board => n. 1. In-context synonym for bboard; sometimes used even for USENET newsgroups. 2. An electronic circuit board (compare card).

factpacks/jargon.fact  view on Meta::CPAN

broken arrow3 => know that `broken arrow' is also military jargon for an accident involving nuclear weapons.... 
broket => /broh'k*t/ or /broh'ket`/ [by analogy with `bracket' a `broken bracket'] n. Either of the characters `<' and `>', when used as paired enclosing delimiters. This word originated as a contraction of the phrase `broken bracket', that is, a bra...
Brooks's Law => prov. "Adding manpower to a late software project makes it later" --- a result of the fact that the advantage from splitting work among N programmers is O(N) (that is, proportional to N), but the complexity and communications cost ass...
Brooks's Law2 => merging their work is O(N^2) (that is, proportional to the square of N). The quote is from Fred Brooks, a manager of IBM's OS/360 project and author of `The Mythical Man-Month' (Addison-Wesley, 1975, ISBN 0-201-00650-2), an excellent...
Brooks's Law3 => The myth in question has been most tersely expressed as "Programmer time is fungible" and Brooks established conclusively that it is not. Hackers have never forgotten his advice; too often, management does. See also creationism, {sec...
BRS => /B-R-S/ n. Syn. {Big Red Switch}. This abbreviation is fairly common on-line.
brute force => adj. Describes a primitive programming style, one in which the programmer relies on the computer's processing power instead of using his or her own intelligence to simplify the problem, often ignoring problems of scale and applying na"...
brute force2 => directly to large ones. The canonical example of a brute-force algorithm is associated with the `traveling salesman problem' (TSP), a classical NP-hard problem Suppose a person is in, say, Boston, and wishes to drive to N other cities...
brute force3 => visit them in order to minimize the distance travelled? The brute-force method is to simply generate all possible routes and compare the distances; while guaranteed to work and simple to implement, this algorithm is clearly very stupi...
brute force4 => obviously absurd routes (like going from Boston to Houston via San Francisco and New York, in that order). For very small N it works well, but it rapidly becomes absurdly inefficient when N increases (for N = 15, there are already 1,3...
brute force5 => consider, and for N = 1000 --- well, see bignum). See also NP-. A more simple-minded example of brute-force programming is finding the smallest number in a large list by first using an existing program to sort the list in ascending or...
brute force6 => first number off the front. Whether brute-force programming should be considered stupid or not depends on the context; if the problem isn't too big, the extra CPU time spent on a brute-force solution may cost less than the programmer ...
brute force7 => `intelligent' algorithm. Alternatively, a more intelligent algorithm may imply more long-term complexity cost and bug-chasing than are justified by the speed improvement. Ken Thompson, co-inventor of UNIX, is reported to have uttered ...
brute force8 => brute force". He probably intended this as a {ha ha only serious}, but the original UNIX kernel's preference for simple, robust, and portable algorithms over brittle `smart' ones does seem to have been a significant factor in the succ...
brute force9 => tradeoffs in software design, the choice between brute force and complex, finely-tuned cleverness is often a difficult one that requires both engineering savvy and delicate esthetic judgment. 
brute force and ignorance => n. A popular design technique at many software houses --- {brute force} coding unrelieved by any knowledge of how problems have been previously solved in elegant ways. Dogmatic adherence to design methodologies tends to e...
brute force and ignorance2 => early {larval stage} programming; unfortunately, many never outgrow it. Often abbreviated BFI "Gak, they used a bubble sort! That's strictly from BFI." Compare bogosity. 
BSD => /B-S-D/ n. [acronym for `Berkeley System Distribution'] a family of {UNIX} versions for the DEC VAX and PDP-11 developed by Bill Joy and others at Berzerkeley starting around 1980, incorporating paged virtual memory, TCP/IP networking enhancem...
bubble sort => n. Techspeak for a particular sorting technique in which pairs of adjacent values in the list to be sorted are compared and interchanged if they are out of order; thus, list entries `bubble upward' in the list until they bump into one ...
bubble sort2 => is not very good relative to other methods and is the one typically stumbled on by na"ive and untutored programmers, hackers consider it the canonical example of a na"ive algorithm. The canonical example of a really *bad* algorithm is...
bubble sort3 => might be used out of ignorance, but any use of bogo-sort could issue only from brain damage or willful perversity. 
bucky bits => /buh'kee bits/ n. 1. obs. The bits produced by the CONTROL and META shift keys on a SAIL keyboard, resulting in a 9-bit keyboard character set. The MIT AI TV (Knight) keyboards extended this with TOP and separate left and right CONTROL ...
bucky bits2 => character set; later, LISP Machines added such keys as SUPER, HYPER, and GREEK (see {space-cadet keyboard}). 2. By extension, bits associated with `extra' shift keys on any keyboard, e.g., the ALT on an IBM PC or command and option key...
bucky bits3 => that `bucky bits' were named for Buckminster Fuller during a period when he was consulting at Stanford. Actually, `Bucky' was Niklaus Wirth's nickname when *he* was at Stanford; he first suggested the idea of an EDIT key to set the 8th...
bucky bits4 => character. This was used in a number of editors written at Stanford or in its environs (TV-EDIT and NLS being the best-known). The term spread to MIT and CMU early and is now in general use. See {double bucky}, {quadruple bucky}. 
buffer overflow => n. What happens when you try to stuff more data into a buffer (holding area) than it can handle. This may be due to a mismatch in the processing rates of the producing and consuming processes (see overrun), or because the buffer is...
buffer overflow2 => data that must accumulate before a piece of it can be processed. For example, in a text-processing tool that crunches a line at a time, a short line buffer can result in lossage as input from a long line overflows the buffer and t...
buffer overflow3 => defensive programming would check for overflow on each character and stop accepting data when the buffer is full up. The term is used of and by humans in a metaphorical sense. "What time did I agree to meet you? My buffer must hav...
buffer overflow4 => phone my buffer is going to overflow." See also spam, {overrun screw}. 
bug => n. An unwanted and unintended property of a program or hardware, esp. one that causes it to malfunction. Antonym of feature. Examples "There's a bug in the editor it writes things out backwards." "The system crashed because of a hardware bug."...
bug-compatible => adj. Said of a design or revision that has been badly compromised by a requirement to be compatible with fossils or misfeatures in other programs or (esp.) previous releases of itself. "MS-DOS 2.0 used \ as a path separator to be bu...
bug-for-bug compatible => n. Same as bug-compatible, with the additional implication that much tedious effort went into ensuring that each (known) bug was replicated.
buglix => /buhg'liks/ n. Pejorative term referring to DEC's ULTRIX operating system in its earlier *severely* buggy versions. Still used to describe ULTRIX, but without venom. Compare HP-SUX.
bulletproof => adj. Used of an algorithm or implementation considered extremely robust; lossage-resistant; capable of correctly recovering from any imaginable exception condition. This is a rare and valued quality. Syn. armor-plated.
bum => 1. vt. To make highly efficient, either in time or space, often at the expense of clarity. "I managed to bum three more instructions out of that code." "I spent half the night bumming the interrupt code." 2. To squeeze out excess; to remove so...
bump => vt. Synonym for increment. Has the same meaning as C's ++ operator. Used esp. of counter variables, pointers, and index dummies in `for', `while', and `do-while' loops.
burble => [from Lewis Carroll's "Jabberwocky"] v. Like flame, but connotes that the source is truly clueless and ineffectual (mere flamers can be competent). A term of deep contempt. "There's some guy on the phone burbling about how he got a DISK FUL...
buried treasure => n. A surprising piece of code found in some program. While usually not wrong, it tends to vary from crufty to bletcherous, and has lain undiscovered only because it was functionally correct, however horrible it is. Used sarcastical...
buried treasure2 => anything *but* treasure. Buried treasure almost always needs to be dug up and removed. "I just found that the scheduler sorts its queue using {bubble sort}! Buried treasure!" 
burn-in period => n. 1. A factory test designed to catch systems with marginal components before they get out the door; the theory is that burn-in will protect customers by outwaiting the steepest part of the {bathtub curve} (see {infant mortality})....
burn-in period2 => length in which a person using a computer is so intensely involved in his project that he forgets basic needs such as food, drink, sleep, etc. Warning Excessive burn-in can lead to burn-out. See {hack mode}, {larval stage}. 
burst page => n. Syn. banner, sense 1.
busy-wait => vi. Used of human behavior, conveys that the subject is busy waiting for someone or something, intends to move instantly as soon as it shows up, and thus cannot do anything else at the moment. "Can't talk now, I'm busy-waiting till Bill ...
buzz => vi. 1. Of a program, to run with no indication of progress and perhaps without guarantee of ever finishing; esp. said of programs thought to be executing tight loops of code. A program that is buzzing appears to be catatonic, but you never ge...
BWQ => /B-W-Q/ [IBM acronym, `Buzz Word Quotient'] The percentage of buzzwords in a speech or documents. Usually roughly proportional to bogosity. See TLA.
by hand => adv. Said of an operation (especially a repetitive, trivial, and/or tedious one) that ought to be performed automatically by the computer, but which a hacker instead has to step tediously through. "My mailer doesn't have a command to inclu...
by hand2 => replying to, so I have to do it by hand." This does not necessarily mean the speaker has to retype a copy of the message; it might refer to, say, dropping into a subshell from the mailer, making a copy of one's mailbox file, reading that ...
by hand3 => and bottom of the message in question, deleting the rest of the file, inserting `>' characters on each line, writing the file, leaving the editor, returning to the mailer, reading the file in, and later remembering to delete the file. Com...
byte => /bit/ [techspeak] n. A unit of memory or data equal to the amount used to represent one character; on modern architectures this is usually 8 bits, but may be 9 on 36-bit machines. Some older architectures used `byte' for quantities of 6 or 7 ...
bytesexual => /bit`sek'shu-*l/ adj. Said of hardware, denotes willingness to compute or pass data in either big-endian or little-endian format (depending, presumably, on a {mode bit} somewhere). See also {NUXI problem}.*C n. 1. The third letter of th...
calculator => [Cambridge] n. Syn. for {bitty box}.
can => vt. To abort a job on a time-sharing system. Used esp. when the person doing the deed is an operator, as in "canned from the {console}". Frequently used in an imperative sense, as in "Can that print job, the LPT just popped a sprocket!" Synony...
canonical => [historically, `according to religious law'] adj. The usual or standard state or manner of something. This word has a somewhat more technical meaning in mathematics. Two formulas such as 9 + x and x + 9 are said to be equivalent because ...
card => n. 1. An electronic printed-circuit board (see also {tall card}, {short card}. 2. obs. Syn. {{punched card}}.
card walloper => n. An EDP programmer who grinds out batch programs that do stupid things like print people's paychecks. Compare {code grinder}. See also {{punched card}}, {eighty-column mind}.
careware => /keir'weir/ n. Shareware for which either the author suggests that some payment be made to a nominated charity or a levy directed to charity is included on top of the distribution charge. Syn. charityware; compare crippleware, sense 2.
cargo cult programming => n. A style of (incompetent) programming dominated by ritual inclusion of code or program structures that serve no real purpose. A cargo cult programmer will usually explain the extra code as a way of working around some bug ...
cargo cult programming2 => neither the bug nor the reason the code apparently avoided the bug was ever fully understood (compare {shotgun debugging}, {voodoo programming}). The term `cargo cult' is a reference to aboriginal religions that grew up in ...
cargo cult programming3 => The practices of these cults center on building elaborate mockups of airplanes and military style landing strips in the hope of bringing the return of the god-like airplanes that brought such marvelous cargo during the war....
cargo cult programming4 => Richard Feynman's characterization of certain practices as "cargo cult science" in his book `Surely You're Joking, Mr. Feynman' (W. W. Norton & Co, New York 1985, ISBN 0-393-01921-7). 
case and paste => [from `cut and paste'] n. 1. The addition of a new feature to an existing system by selecting the code from an existing feature and pasting it in with minor changes. Common in telephony circles because most operations in a telephone...
case and paste2 => statements. Leads to {software bloat}. In some circles of EMACS users this is called `programming by Meta-W', because Meta-W is the EMACS command for copying a block of text to a kill buffer in preparation to pasting it in elsewher...
case and paste3 => implying that the programmer is acting mindlessly rather than thinking carefully about what is required to integrate the code for two similar cases. 
casters-up mode => [IBM] n. Yet another synonym for `broken' or `down'.
casting the runes => n. What a guru does when you ask him or her to run a particular program and type at it because it never works for anyone else; esp. used when nobody can ever see what the guru is doing different from what J. Random Luser does. Co...
casting the runes2 => {examining the entrails}; also see the AI koan about Tom Knight in appendix A. 
cat => [from `catenate' via {UNIX} `cat(1)'] vt. 1. [techspeak] To spew an entire file to the screen or some other output sink without pause. 2. By extension, to dump large amounts of data at an unprepared target or with no intention of browsing it c...
catatonic => adj. Describes a condition of suspended animation in which something is so wedged or hung that it makes no response. If you are typing on a terminal and suddenly the computer doesn't even echo the letters back to the screen as you type, ...
cdr => /ku'dr/ or /kuh'dr/ [from LISP] vt. To skip past the first item from a list of things (generalized from the LISP operation on binary tree structures, which returns a list consisting of all but the first element of its argument). In the form `c...
chad => /chad/ n. 1. The perforated edge strips on printer paper, after they have been separated from the printed portion. Also called selvage and perf. 2. obs. The confetti-like paper bits punched out of cards or paper tape; this was also called `ch...
chad box => n. {Iron Age} card punches contained boxes inside them, about the size of a lunchbox (or in some models a large wastebasket), that held the chad (sense 2). You had to open the covers of the card punch periodically and empty the chad box. ...
chad box2 => the equivalent device in the CPU enclosure, which was typically across the room in another great gray-and-blue box. 
chain => [orig. from BASIC's `CHAIN' statement] vi. To hand off execution to a child or successor without going through the OS command interpreter that invoked it. The state of the parent program is lost and there is no returning to it. Though this f...
char => /keir/ or /char/; rarely, /kar/ n. Shorthand for `character'. Esp. used by C programmers, as `char' is C's typename for character data.
charityware => /char'it-ee-weir`/ n. Syn. careware.
chase pointers => 1. vi. To go through multiple levels of indirection, as in traversing a linked list or graph structure. Used esp. by programmers in C, where explicit pointers are a very common data type. This is techspeak, but it remains jargon whe...
chase pointers2 => chasing pointers. Bob said you could tell me who to talk to about...." See {dangling pointer} and snap. 2. [Cambridge] `pointer chase' or `pointer hunt' The process of going through a dump (interactively or on a large piece of pape...
chase pointers3 => following dynamic data-structures. Used only in a debugging context. 
chemist => [Cambridge] n. Someone who wastes computer time on number-crunching when you'd far rather the machine were doing something more productive, such as working out anagrams of your name or printing Snoopy calendars or running life patterns. Ma...
Chernobyl chicken => n. See {laser chicken}.
Chernobyl packet => /cher-noh'b*l pak'*t/ n. A network packet that induces {network meltdown} (the result of a {broadcast storm}), in memory of the 1987 nuclear accident at Chernobyl in the Ukraine. The typical case of this is an IP Ethernet datagram...
Chernobyl packet2 => both source and destination Ether and IP address set as the respective broadcast addresses for the subnetworks being gated between. Compare {Christmas tree packet}. 
chicken head => [Commodore] n. The Commodore Business Machines logo, which strongly resembles a poultry part. Rendered in ASCII as `C='. With the arguable exception of the Amiga (see amoeba), Commodore's machines are notoriously crocky little {bitty ...
chicken head2 => Thus, this usage may owe something to Philip K. Dick's novel `Do Androids Dream of Electric Sheep?' (the basis for the movie `Blade Runner'), in which a `chickenhead' is a mutant with below-average intelligence. 
chiclet keyboard => n. A keyboard with small rectangular or lozenge-shaped rubber or plastic keys that look like pieces of chewing gum. (Chiclets is the brand name of a variety of chewing gum that does in fact resemble the keys of chiclet keyboards.)...
chiclet keyboard2 => IBM PCjr keyboard. Vendors unanimously liked these because they were cheap, and a lot of early portable and laptop products got launched using them. Customers rejected the idea with almost equal unanimity, and chiclets are not of...
chine nual => /sheen'yu-*l/ [MIT] n.,obs. The Lisp Machine Manual, so called because the title was wrapped around the cover so only those letters showed on the front.
Chinese Army technique => n. Syn. {Mongolian Hordes technique}.
choke => v. To reject input, often ungracefully. "Nuls make System V's `lpr(1)' choke." "I tried building an EMACS binary to use X, but `cpp(1)' choked on all those `#define's." See barf, gag, vi.
chomp => vi. To lose; specifically, to chew on something of which more was bitten off than one can. Probably related to gnashing of teeth. See bagbiter. A hand gesture commonly accompanies this. To perform it, hold the four fingers together and place...
chomper => n. Someone or something that is chomping; a loser. See loser, bagbiter, chomp.
Christmas tree => n. A kind of RS-232 line tester or breakout box featuring rows of blinking red and green LEDs suggestive of Christmas lights.
Christmas tree packet => n. A packet with every single option set for whatever protocol is in use. See {kamikaze packet}, {Chernobyl packet}. (The term doubtless derives from a fanciful image of each little option bit being represented by a different...
chrome => [from automotive slang via wargaming] n. Showy features added to attract users but contributing little or nothing to the power of a system. "The 3D icons in Motif are just chrome, but they certainly are *pretty* chrome!" Distinguished from ...
chug => vi. To run slowly; to grind or grovel. "The disk is chugging like crazy."
Church of the SubGenius => n. A mutant offshoot of Discordianism launched in 1981 as a spoof of fundamentalist Christianity by the `Reverend' Ivan Stang, a brilliant satirist with a gift for promotion. Popular among hackers as a rich source of bizarr...
Church of the SubGenius2 => "Bob" the divine drilling-equipment salesman, the Benevolent Space Xists, and the Stark Fist of Removal. Much SubGenius theory is concerned with the acquisition of the mystical substance or quality of `slack'. 
Cinderella Book => [CMU] n. `Introduction to Automata Theory, Languages, and Computation', by John Hopcroft and Jeffrey Ullman, (Addison-Wesley, 1979). So called because the cover depicts a girl (putatively Cinderella) sitting in front of a Rube Gold...
Cinderella Book2 => coming out of it. The back cover depicts the girl with the device in shambles after she has pulled on the rope. See also {{book titles}}. 
CI$ => // n. Hackerism for `CIS', CompuServe Information Service. The dollar sign refers to CompuServe's rather steep line charges. Often used in {sig block}s just before a CompuServe address. Syn. Compu$erve.
Classic C => /klas'ik C/ [a play on `Coke Classic'] n. The C programming language as defined in the first edition of K&R, with some small additions. It is also known as `K&R C'. The name came into use while C was being standardized by the ANSI X3J11 ...
Classic C2 => This is sometimes applied elsewhere thus, `X Classic', where X = Star Trek (referring to the original TV series) or X = PC (referring to IBM's ISA-bus machines as opposed to the PS/2 series). This construction is especially used of prod...
Classic C3 => versions are considered serious losers relative to the older ones. 
clean => 1. adj. Used of hardware or software designs, implies `elegance in the small', that is, a design or implementation that may not hold any surprises but does things in a way that is reasonably intuitive and relatively easy to comprehend from t...
CLM => /C-L-M/ [Sun `Career Limiting Move'] 1. n. An action endangering one's future prospects of getting plum projects and raises, and possibly one's job "His Halloween costume was a parody of his manager. He won the prize for `best CLM'." 2. adj. D...
clobber => vt. To overwrite, usually unintentionally "I walked off the end of the array and clobbered the stack." Compare mung, scribble, trash, and {smash the stack}.
clocks => n. Processor logic cycles, so called because each generally corresponds to one clock pulse in the processor's timing. The relative execution times of instructions on a machine are usually discussed in clocks rather than absolute fractions o...
clone => n. 1. An exact duplicate "Our product is a clone of their product." Implies a legal reimplementation from documentation or by reverse-engineering. Also connotes lower price. 2. A shoddy, spurious copy "Their product is a clone of our product...
clover key => [Mac users] n. See {command key}.
clustergeeking => /kluh'st*r-gee`king/ [CMU] n. Spending more time at a computer cluster doing CS homework than most people spend breathing.
COBOL => /koh'bol/ [COmmon Business-Oriented Language] n. (Synonymous with evil.) A weak, verbose, and flabby language used by {card walloper}s to do boring mindless things on dinosaur mainframes. Hackers believe all COBOL programmers are suits or {c...
COBOL fingers => /koh'bol fing'grz/ n. Reported from Sweden, a (hypothetical) disease one might get from coding in COBOL. The language requires code verbose beyond all reason; thus it is alleged that programming too much in COBOL causes one's fingers...
COBOL fingers2 => endless typing. "I refuse to type in all that source code again; it would give me COBOL fingers!" 
code grinder => n. 1. A suit-wearing minion of the sort hired in legion strength by banks and insurance companies to implement payroll packages in RPG and other such unspeakable horrors. In his native habitat, the code grinder often removes the suit ...
code grinder2 => consisting of button-down shirt (starch optional) and a tie. In times of dire stress, the sleeves (if long) may be rolled up and the tie loosened about half an inch. It seldom helps. The {code grinder}'s milieu is about as far from h...
code grinder3 => touch a computer; the term connotes pity. See {Real World}, suit. 2. Used of or to a hacker, a really serious slur on the person's creative ability; connotes a design style characterized by primitive technique, rule-boundedness, {bru...
code grinder4 => imagination. Compare {card walloper}; contrast hacker, {real programmer}. 
code police => [by analogy with George Orwell's `thought police'] n. A mythical team of Gestapo-like storm troopers that might burst into one's office and arrest one for violating programming style rules. May be used either seriously, to underline a ...
code police2 => violation is dangerous, or ironically, to suggest that the practice under discussion is condemned mainly by anal-retentive weenies. "Dike out that goto or the code police will get you!" The ironic usage is perhaps more common. 
codewalker => n. A program component that traverses other programs for a living. Compilers have codewalkers in their front ends; so do cross-reference generators and some database front ends. Other utility programs that try to do too much with source...
coefficient of X => n. Hackish speech makes rather heavy use of pseudo-mathematical metaphors. Four particularly important ones involve the terms `coefficient', `factor', `index', and `quotient'. They are often loosely applied to things you cannot re...

factpacks/jargon.fact  view on Meta::CPAN

garbage collect => vi. (also `garbage collection', n.) See GC.
garply => /gar'plee/ [Stanford] n. Another meta-syntactic variable (see foo); once popular among SAIL hackers.
gas => [as in `gas chamber'] 1. interj. A term of disgust and hatred, implying that gas should be dispensed in generous quantities, thereby exterminating the source of irritation. "Some loser just reloaded the system for no reason! Gas!" 2. interj. A...
gaseous => adj. Deserving of being gassed. Disseminated by Geoff Goodfellow while at SRI; became particularly popular after the Moscone-Milk killings in San Francisco, when it was learned that the defendant Dan White (a politician who had supported P...
GC => /G-C/ [from LISP terminology; `Garbage Collect'] 1. vt. To clean up and throw away useless things. "I think I'll GC the top of my desk today." When said of files, this is equivalent to GFR. 2. vt. To recycle, reclaim, or put to another use. 3. ...
GCOS => /jee'kohs/ n. A quick-and-dirty clone of System/360 DOS that emerged from GE around 1970; originally called GECOS (the General Electric Comprehensive Operating System). Later kluged to support primitive timesharing and transaction processing....
GECOS => /jee'kohs/ n. See {GCOS}.
gedanken => /g*-don'kn/ adj. Ungrounded; impractical; not well-thought-out; untried; untested. `Gedanken' is a German word for `thought'. A thought experiment is one you carry out in your head. In physics, the term `gedanken experiment' is used to re...
geef => v. [ostensibly from `gefingerpoken'] vt. Syn. mung. See also blinkenlights.
geek out => vi. To temporarily enter techno-nerd mode while in a non-hackish context, for example at parties held near computer equipment. Especially used when you need to do something highly technical and don't have time to explain "Pardon me while ...
gen => /jen/ n.,v. Short for generate, used frequently in both spoken and written contexts.
gender mender => n. A cable connector shell with either two male or two female connectors on it, used to correct the mismatches that result when some loser didn't understand the RS232C specification and the distinction between DTE and DCE. Used esp. ...
gender mender2 => original D-25 or the IBM PC's bogus D-9 format. Also called `gender bender', `gender blender', `sex changer', and even `homosexual adapter'; however, there appears to be some confusion as to whether a `male homosexual adapter' has p...
gender mender3 => on both sides (connects two males). 
General Public Virus => n. Pejorative name for some versions of the GNU project copyleft or General Public License (GPL), which requires that any tools or apps incorporating copylefted code must be source-distributed on the same counter-commercial te...
General Public Virus2 => alleged that the copyleft `infects' software generated with GNU tools, which may in turn infect other software that reuses any of its code. The Free Software Foundation's official position as of January 1991 is that copyright...
General Public Virus3 => "programs textually incorporating significant amounts of GNU code", and that the `infection' is not passed on to third parties unless actual GNU source is transmitted (as in, for example, use of the Bison parser skeleton). Ne...
General Public Virus4 => the copyleft language is `boobytrapped' has caused many developers to avoid using GNU tools and the GPL. Recent (July 1991) changes in the language of the version 2.00 language may eliminate this problem. 
generate => vt. To produce something according to an algorithm or program or set of rules, or as a (possibly unintended) side effect of the execution of an algorithm or program. The opposite of parse. This term retains its mechanistic connotations (t...
gensym => /jen'sim/ [from MacLISP for `generated symbol'] 1. v. To invent a new name for something temporary, in such a way that the name is almost certainly not in conflict with one already in use. 2. n. The resulting name. The canonical form of a g...
Get a life! => imp. Hacker-standard way of suggesting that the person to whom you are speaking has succumbed to terminal geekdom (see {computer geek}). Often heard on USENET, esp. as a way of suggesting that the target is taking some obscure issue of...
Get a life!2 => exhortation was popularized by William Shatner on a "Saturday Night Live" episode in a speech that ended "Get a *life*!", but some respondents believe it to have been in use before then. 
Get a real computer! => imp. Typical hacker response to news that somebody is having trouble getting work done on a system that (a) is single-tasking, (b) has no hard disk, or (c) has an address space smaller than 4 megabytes. This is as of mid-1991;...
Get a real computer!2 => computer' rises with time, and it may well be (for example) that machines with character-only displays will be generally considered `unreal' in a few years (GLS points out that they already are in some circles). See essential...
GFR => /G-F-R/ vt. [ITS] From `Grim File Reaper', an ITS and Lisp Machine utility. To remove a file or files according to some program-automated or semi-automatic manual procedure, especially one designed to reclaim mass storage space or reduce name-...
gig => /jig/ or /gig/ [SI] n. See {quantifiers}.
giga- => /ji'ga/ or /gi'ga/ [SI] pref. See {quantifiers}.
GIGO => /gi'goh/ [acronym] 1. `Garbage In, Garbage Out' --- usually said in response to lusers who complain that a program didn't complain about faulty data. Also commonly used to describe failures in human decision making due to faulty, incomplete, ...
gillion => /gil'y*n/ or /jil'y*n/ [formed from giga- by analogy with mega/million and tera/trillion] n. 10^9. Same as an American billion or a British `milliard'. How one pronounces this depends on whether one speaks giga- with a hard or soft `g'.
GIPS => /gips/ or /jips/ [analogy with MIPS] n. Giga-Instructions per Second (also possibly `Gillions of Instructions per Second'; see gillion). In 1991, this is used of only a handful of highly parallel machines, but this is expected to change. Comp...
glark => /glark/ vt. To figure something out from context. "The System III manuals are pretty poor, but you can generally glark the meaning from context." Interestingly, the word was originally `glork'; the context was "This gubblick contains many no...
glass => [IBM] n. Synonym for silicon.
glass tty => /glas T-T-Y/ or /glas ti'tee/ n. A terminal that has a display screen but which, because of hardware or software limitations, behaves like a teletype or some other printing terminal, thereby combining the disadvantages of both like a pri...
glass tty2 => display hacks, and like a display terminal, it doesn't produce hard copy. An example is the early `dumb' version of Lear-Siegler ADM 3 (without cursor control). See tube, tty. See appendix A for an interesting true story about a glass t...
glassfet => /glas'fet/ [by analogy with MOSFET, the acronym for `Metal-Oxide-Semiconductor Field-Effect Transistor'] n. Syn. firebottle, a humorous way to refer to a vacuum tube.
glitch => /glich/ [from German `glitschen' to slip, via Yiddish `glitshen', to slide or skid] 1. n. A sudden interruption in electric service, sanity, continuity, or program function. Sometimes recoverable. An interruption in electric service is spec...
glob => /glob/, *not* /glohb/ [UNIX] vt.,n. To expand special characters in a wildcarded name, or the act of so doing (the action is also called `globbing'). The UNIX conventions for filename wildcarding have become sufficiently pervasive that many h...
glork => /glork/ 1. interj. Term of mild surprise, usually tinged with outrage, as when one attempts to save the results of 2 hours of editing and finds that the system has just crashed. 2. Used as a name for just about anything. See foo. 3. vt. Simi...
glue => n. Generic term for any interface logic or protocol that connects two component blocks. For example, {Blue Glue} is IBM's SNA protocol, and hardware designers call anything used to connect large VLSI's or circuit blocks `glue logic'.
gnarly => /nar'lee/ adj. Both obscure and hairy in the sense of complex. "Yow! --- the tuned assembler implementation of BitBlt is really gnarly!" From a similar but less specific usage in surfer slang.
GNU => /gnoo/, *not* /noo/ 1. [acronym `GNU's Not UNIX!', see {{recursive acronym}}] A UNIX-workalike development effort of the Free Software Foundation headed by Richard Stallman (rms@gnu.ai.mit.edu). GNU EMACS and the GNU C compiler, two tools desi...
GNUMACS => /gnoo'maks/ [contraction of `GNU EMACS'] Often-heard abbreviated name for the GNU project's flagship tool, EMACS. Used esp. in contrast with GOSMACS.
go flatline => [from cyberpunk SF, refers to flattening of EEG traces upon brain-death] vi., also adjectival `flatlined'. 1. To die, terminate, or fail, esp. irreversibly. In hacker parlance, this is used of machines only, human death being considere...
go flatline2 => employ jargon-jokes. 2. To go completely quiescent; said of machines undergoing controlled shutdown. "You can suffer file damage if you shut down UNIX but power off before the system has gone flatline." 3. Of a video tube, to fail by ...
go flatline3 => sees is a bright horizontal line bisecting the screen. 
go root => [UNIX] vi. To temporarily enter {root mode} in order to perform a privileged operation. This use is deprecated in Australia, where v. `root' refers to animal sex.
go-faster stripes => [UK] Syn. chrome.
gobble => vt. To consume or to obtain. The phrase `gobble up' tends to imply `consume', while `gobble down' tends to imply `obtain'. "The output spy gobbles characters out of a tty output buffer." "I guess I'll gobble down a copy of the documentation...
Godzillagram => /god-zil'*-gram/ n. [from Japan's national hero] 1. A network packet that in theory is a broadcast to every machine in the universe. The typical case of this is an IP datagram whose destination IP address is [255.255.255.255]. Fortuna...
golden => adj. [prob. from folklore's `golden egg'] When used to describe a magnetic medium (e.g., `golden disk', `golden tape'), describes one containing a tested, up-to-spec, ready-to-ship software version. Compare platinum-iridium.
golf-ball printer => n. The IBM 2741, a slow but letter-quality printing device and terminal based on the IBM Selectric typewriter. The `golf ball' was a round object bearing reversed embossed images of 88 different characters arranged on four meridi...
golf-ball printer2 => font by swapping in a different golf ball. This was the technology that enabled APL to use a non-EBCDIC, non-ASCII, and in fact completely non-standard character set. This put it 10 years ahead of its time --- where it stayed, f...
golf-ball printer3 => character displays gave way to programmable bit-mapped devices with the flexibility to support other character sets. 
gonk => /gonk/ vt.,n. 1. To prevaricate or to embellish the truth beyond any reasonable recognition. It is alleged that in German the term is (mythically) `gonken'; in Spanish the verb becomes `gonkar'. "You're gonking me. That story you just told me...
gonkulator => /gon'kyoo-lay-tr/ [from the old "Hogan's Heroes" TV series] n. A pretentious piece of equipment that actually serves no useful purpose. Usually used to describe one's least favorite piece of computer hardware. See gonk.
gonzo => /gon'zoh/ [from Hunter S. Thompson] adj. Overwhelming; outrageous; over the top; very large, esp. used of collections of source code, source files, or individual functions. Has some of the connotations of moby and hairy, but without the impl...
Good Thing => n.,adj. Often capitalized; always pronounced as if capitalized. 1. Self-evidently wonderful to anyone in a position to notice "The Trailblazer's 19.2Kbaud PEP mode with on-the-fly Lempel-Ziv compression is a Good Thing for sites relayin...
Good Thing2 => possibly have any ill side-effects and may save considerable grief later "Removing the self-modifying code from that shared library would be a Good Thing." 3. When said of software tools or libraries, as in "YACC is a Good Thing", spec...
Good Thing3 => drastically reduced a programmer's work load. Oppose {Bad Thing}. 
gorilla arm => n. The side-effect that destroyed touch-screens as a mainstream input technology despite a promising start in the early 1980s. It seems the designers of all those spiffy touch-menu systems failed to notice that humans aren't designed t...
gorilla arm2 => their faces making small motions. After more than a very few selections, the arm begins to feel sore, cramped, and oversized; hence `gorilla arm'. This is now considered a classic cautionary tale to human-factors designers; "Remember ...
gorilla arm3 => "How is this going to fly in *real* use?". 
gorp => /gorp/ [CMU perhaps from the canonical hiker's food, Good Old Raisins and Peanuts] Another metasyntactic variable, like foo and bar.
GOSMACS => /goz'maks/ [contraction of `Gosling EMACS'] n. The first EMACS-in-C implementation, predating but now largely eclipsed by GNUMACS. Originally freeware; a commercial version is now modestly popular as `UniPress EMACS'. The author (James Gos...
Gosperism => /gos'p*r-izm/ A hack, invention, or saying by arch-hacker R. William (Bill) Gosper. This notion merits its own term because there are so many of them. Many of the entries in HAKMEM are Gosperisms; see also life.
gotcha => n. A misfeature of a system, especially a programming language or environment, that tends to breed bugs or mistakes because it behaves in an unexpected way. For example, a classic gotcha in C is the fact that `if (a=b) code;' is syntactical...
GPL => /G-P-L/ n. Abbrev. for `General Public License' in widespread use; see copyleft.
GPV => /G-P-V/ n. Abbrev. for {General Public Virus} in widespread use.
grault => /grawlt/ n. Yet another meta-syntactic variable, invented by Mike Gallaher and propagated by the GOSMACS documentation. See corge.
gray goo => n. A hypothetical substance composed of sagans of sub-micron-sized self-replicating robots programmed to make copies of themselves out of whatever is available. The image that goes with the term is one of the entire biosphere of Earth bei...
gray goo2 => goo. This is the simplest of the {nanotechnology} disaster scenarios, easily refuted by arguments from energy requirements and elemental abundances. Compare {blue goo}. 
Great Renaming => n. The {flag day} on which all of the non-local groups on the USENET had their names changed from the net.- format to the current multiple-hierarchies scheme.
Great Runes => n. Uppercase-only text or display messages. Some archaic operating systems still emit these. See also runes, {smash case}, {fold case}. Decades ago, back in the days when it was the sole supplier of long-distance hardcopy transmittal d...
Great Runes2 => Corporation was faced with a major design choice. To shorten code lengths and cut complexity in the printing mechanism, it had been decided that teletypes would use a monocase font, either ALL UPPER or all lower. The question was, whi...
Great Runes3 => conducted on readability under various conditions of bad ribbon, worn print hammers, etc. Lowercase won; it is less dense and has more distinctive letterforms, and is thus much easier to read both under ideal conditions and when the l...
Great Runes4 => obscured. The results were filtered up through management. The chairman of Teletype killed the proposal because it failed one incredibly important criterion "It would be impossible to spell the name of the Deity correctly." In this wa...
Great Runes5 => folklore has it) superstition triumphed over utility. Teletypes were the major input devices on most early computers, and terminal manufacturers looking for corners to cut naturally followed suit until well into the 1970s. Thus, that ...
Great Runes6 => Runes for thirty years. 
great-wall => [from SF fandom] vi.,n. A mass expedition to an oriental restaurant, esp. one where food is served family-style and shared. There is a common heuristic about the amount of food to order, expressed as "Get N - 1 entrees"; the value of N,...
Green Book => n. 1. One of the three standard PostScript references `PostScript Language Program Design', bylined `Adobe Systems' (Addison-Wesley, 1988; QA76.73.P67P66 ISBN; 0-201-14396-8); see also {Red Book}, {Blue Book}). 2. Informal name for one ...
Green Book2 => SmallTalk `Smalltalk-80 Bits of History, Words of Advice', by Glenn Krasner (Addison-Wesley, 1983; QA76.8.S635S58; ISBN 0-201-11669-3) (this, too, is associated with blue and red books). 3. The `X/Open Compatibility Guide'. Defines an ...
Green Book3 => environment that is a proper superset of POSIX/SVID; also includes descriptions of a standard utility toolkit, systems administrations features, and the like. This grimoire is taken with particular seriousness in Europe. See {Purple Bo...
Green Book4 => Operating Systems Interface standard has been dubbed "The Ugly Green Book". 5. Any of the 1992 standards which will be issued by the CCITT's tenth plenary assembly. Until now, these have changed color each review cycle (1984 was {Red B...
Green Book5 => is rumored that this convention is going to be dropped before 1992. These include, among other things, the X.400 email standard and the Group 1 through 4 fax standards. See also {{book titles}}. 
green bytes => n. 1. Meta-information embedded in a file, such as the length of the file or its name; as opposed to keeping such information in a separate description file or record. The term comes from an IBM user's group meeting (ca. 1962) at which...
green bytes2 => debated and the diagram of the file on the blackboard had the `green bytes' drawn in green. 2. By extension, the non-data bits in any self-describing format. "A GIF file contains, among other things, green bytes describing the packing...
green bytes3 => out-of-band, zigamorph, fence (sense 1). 
green card => n. [after the `IBM System/360 Reference Data' card] This is used for any summary of an assembly language, even if the color is not green. Less frequently used now because of the decrease in the use of assembly language. "I'll go get my ...
green card2 => addressing mode for that instruction." Some green cards are actually booklets. The original green card became a yellow card when the System/370 was introduced, and later a yellow booklet. An anecdote from IBM refers to a scene that too...
green card3 => room at Yorktown in 1978. A luser overheard one of the programmers ask another "Do you have a green card?" The other grunted and passed the first a thick yellow booklet. At this point the luser turned a delicate shade of olive and rapi...
green card4 => return. See also card. 
green lightning => [IBM] n. 1. Apparently random flashing streaks on the face of 3278-9 terminals while a new symbol set is being downloaded. This hardware bug was left deliberately unfixed, as some genius within IBM suggested it would let the user k...
green lightning2 => That, it certainly does. Later microprocessor-driven IBM color graphics displays were actually *programmed* to produce green lightning! 2. [proposed] Any bug perverted into an alleged feature by adroit rationalization or marketing...
green lightning3 => the 88000 architecture `compatibility logic', but I call it green lightning". See also feature. 
green machine => n. A computer or peripheral device that has been designed and built to military specifications for field equipment (that is, to withstand mechanical shock, extremes of temperature and humidity, and so forth). Comes from the olive-dra...
Green's Theorem => [TMRC] prov. For any story, in any group of people there will be at least one person who has not heard the story. [The name of this theorem is a play on a fundamental theorem in calculus. --- ESR]
grep => /grep/ [from the qed/ed editor idiom g/re/p , where re stands for a regular expression, to Globally search for the Regular Expression and Print the lines containing matches to it, via {UNIX} `grep(1)'] vt. To rapidly scan a file or file set l...
grind => vt. 1. [MIT and Berkeley] To format code, especially LISP code, by indenting lines so that it looks pretty. This usage was associated with the MacLISP community and is now rare; prettyprint was and is the generic term for such operations. 2....
grind crank => n. A mythical accessory to a terminal. A crank on the side of a monitor, which when operated makes a zizzing noise and causes the computer to run faster. Usually one does not refer to a grind crank out loud, but merely makes the approp...
grind crank2 => grind and {wugga wugga}. Historical note At least one real machine actually had a grind crank --- the R1, a research machine built toward the end of the days of the great vacuum tube computers, in 1959. R1 (also known as `The Rice Ins...
grind crank3 => as `The Rice University Computer' (TRUC)) had a single-step/free-run switch for use when debugging programs. Since single-stepping through a large program was rather tedious, there was also a crank with a cam and gear arrangement that...
grind crank4 => button. This allowed one to `crank' through a lot of code, then slow down to single-step for a bit when you got near the code of interest, poke at some registers using the console typewriter, and then keep on cranking. 
gritch => /grich/ 1. n. A complaint (often caused by a glitch). 2. vi. To complain. Often verb-doubled "Gritch gritch". 3. A synonym for glitch (as verb or noun).
grok => /grok/, var. /grohk/ [from the novel `Stranger in a Strange Land', by Robert A. Heinlein, where it is a Martian word meaning literally `to drink' and metaphorically `to be one with'] vt. 1. To understand, usually in a global sense. Connotes i...
gronk => /gronk/ [popularized by Johnny Hart's comic strip "B.C." but the word apparently predates that] vt. 1. To clear the state of a wedged device and restart it. More severe than `to frob'. 2. [TMRC] To cut, sever, smash, or similarly disable. 3....
gronk out => vi. To cease functioning. Of people, to go home and go to sleep. "I guess I'll gronk out now; see you all tomorrow."
gronked => adj. 1. Broken. "The teletype scanner was gronked, so we took the system down." 2. Of people, the condition of feeling very tired or (less commonly) sick. "I've been chasing that bug for 17 hours now and I am thoroughly gronked!" Compare b...
grovel => vi. 1. To work interminably and without apparent progress. Often used transitively with `over' or `through'. "The file scavenger has been groveling through the file directories for 10 minutes now." Compare grind and crunch. Emphatic form `g...
grunge => /gruhnj/ n. 1. That which is grungy, or that which makes it so. 2. [Cambridge] Code which is inaccessible due to changes in other parts of the program. The preferred term in North America is {dead code}.
gubbish => /guhb'*sh/ [a portmanteau of `garbage' and `rubbish'?] n. Garbage; crap; nonsense. "What is all this gubbish?" The opposite portmanteau `rubbage' is also reported.
guiltware => /gilt'weir/ n. 1. A piece of freeware decorated with a message telling one how long and hard the author worked on it and intimating that one is a no-good freeloader if one does not immediately send the poor suffering martyr gobs of money...
gumby => /guhm'bee/ [from a class of Monty Python characters, poss. themselves named after the 1960s claymation character] n. An act of minor but conspicuous stupidity, often in `gumby maneuver' or `pull a gumby'.
gun => [ITS from the `GUN' command] vt. To forcibly terminate a program or job (computer, not career). "Some idiot left a background process running soaking up half the cycles, so I gunned it." Compare can.
gunch => /guhnch/ [TMRC] vt. To push, prod, or poke at a device that has almost produced the desired result. Implies a threat to mung.
gurfle => /ger'fl/ interj. An expression of shocked disbelief. "He said we have to recode this thing in FORTRAN by next week. Gurfle!" Compare weeble.
guru => n. 1. [UNIX] An expert. Implies not only wizard skill but also a history of being a knowledge resource for others. Less often, used (with a qualifier) for other experts on other systems, as in `VMS guru'. See {source of all good bits}. 2. Ami...
ha ha only serious => [from SF fandom, orig. as mutation of HHOK, `Ha Ha Only Kidding'] A phrase (often seen abbreviated as HHOS) that aptly captures the flavor of much hacker discourse. Applied especially to parodies, absurdities, and ironic jokes t...
ha ha only serious2 => to contain a possibly disquieting amount of truth, or truths that are constructed on in-joke and self-parody. This lexicon contains many examples of ha-ha-only-serious in both form and content. Indeed, the entirety of hacker cu...
ha ha only serious3 => ha-ha-only-serious by hackers themselves; to take it either too lightly or too seriously marks a person as an outsider, a wannabee, or in {larval stage}. For further enlightenment on this subject, consult any Zen master. See al...
hack => 1. n. Originally, a quick job that produces what is needed, but not well. 2. n. An incredibly good, and perhaps very time-consuming, piece of work that produces exactly what is needed. 3. vt. To bear emotionally or physically. "I can't hack t...
hack attack => [poss. by analogy with `Big Mac Attack' from ads for the McDonald's fast-food chain; the variant `big hack attack' is reported] n. Nearly synonymous with {hacking run}, though the latter more strongly implies an all-nighter.

factpacks/jargon.fact  view on Meta::CPAN

hook => n. A software or hardware feature included in order to simplify later additions or changes by a user. For example, a simple program that prints numbers might always print them in base 10, but a more flexible version would let a variable deter...
hop => n. One file transmission in a series required to get a file from point A to point B on a store-and-forward network. On such networks (including UUCPNET and FidoNet), the important inter-machine metric is the number of hops in the shortest path...
hose => 1. vt. To make non-functional or greatly degraded in performance. "That big ray-tracing program really hoses the system." See hosed. 2. n. A narrow channel through which data flows under pressure. Generally denotes data paths that represent p...
hosed => adj. Same as down. Used primarily by UNIX hackers. Humorous also implies a condition thought to be relatively easy to reverse. Probably derived from the Canadian slang `hoser' popularized by the Bob and Doug Mackenzie skits on SCTV. See hose...
hot spot => n. 1. [primarily used by C/UNIX programmers, but spreading] It is received wisdom that in most programs, less than 10% of the code eats 90% of the execution time; if one were to graph instruction visits versus code addresses, one would ty...
hot spot2 => a lot of low-level noise. Such spikes are called `hot spots' and are good candidates for heavy optimization or hand-hacking. The term is especially used of tight loops and recursions in the code's central algorithm, as opposed to (say) i...
hot spot3 => infrequent I/O operations. See tune, bum, hand-hacking. 2. The active location of a cursor on a bit-map display. "Put the mouse's hot spot on the `ON' widget and click the left button." 3. In a massively parallel computer with shared mem...
hot spot4 => all 10,000 processors are trying to read or write at once (perhaps because they are all doing a busy-wait on the same lock). 
house wizard => [prob. from ad-agency lingo, `house freak'] n. A hacker occupying a technical-specialist, R&D, or systems position at a commercial shop. A really effective house wizard can have influence out of all proportion to his/her ostensible ra...
house wizard2 => suit. Used esp. of UNIX wizards. The term `house guru' is equivalent. 
HP-SUX => /H-P suhks/ n. Unflattering hackerism for HP-UX, Hewlett-Packard's UNIX port. Features some truly unique bogosities in the filesystem internals and elsewhere which occasionally create portability problems. HP-UX is often referred to as `hoc...
huff => v. To compress data using a Huffman code. Various programs that use such methods have been called `HUFF' or some variant thereof. Oppose puff. Compare crunch, compress.
humma => // excl. A filler word used on various `chat' and `talk' programs when you had nothing to say but felt that it was important to say something. The word apparently originated (at least with this definition) on the MECC Timeshare System (MTS, ...
Humor, Hacker => n. A distinctive style of shared intellectual humor found among hackers, having the following distinctive characteristics 1. Fascination with form-vs.-content jokes, paradoxes, and humor having to do with confusion of metalevels (see...
Humor, Hacker2 => laugh hold a red index card in front of him/her with "GREEN" written on it, or vice-versa (note, however, that this is funny only the first time). 2. Elaborate deadpan parodies of large intellectual constructs, such as specification...
Humor, Hacker3 => documents, language descriptions (see INTERCAL), and even entire scientific theories (see {quantum bogodynamics}, computron). 3. Jokes that involve screwily precise reasoning from bizarre, ludicrous, or just grossly counter-intuitiv...
Humor, Hacker4 => puns and wordplay. 5. A fondness for apparently mindless humor with subversive currents of intelligence in it --- for example, old Warner Brothers and Rocky & Bullwinkle cartoons, the Marx brothers, the early B-52s, and Monty Python...
Humor, Hacker5 => this trait with elements of high camp and slapstick is especially favored. 6. References to the symbol-object antinomies and associated ideas in Zen Buddhism and (less often) Taoism. See {has the X nature}, Discordianism, zen, {ha h...
Humor, Hacker6 => See also filk, retrocomputing, and appendix B. If you have an itchy feeling that all 6 of these traits are really aspects of one thing that is incredibly difficult to talk about exactly, you are (a) correct and (b) responding like a...
Humor, Hacker7 => recognizable (though in a less marked form) throughout {{science-fiction fandom}}. 
hung => [from `hung up'] adj. Equivalent to wedged, but more common at UNIX/C sites. Not generally used of people. Syn. with {locked up}, wedged; compare hosed. See also hang. A hung state is distinguished from crashed or down, where the program or s...
hungry puppy => n. Syn. slopsucker.
hungus => /huhng'g*s/ [perhaps related to slang `humongous'] adj. Large, unwieldy, usually unmanageable. "TCP is a hungus piece of code." "This is a hungus set of modifications."
hyperspace => /hi'per-spays/ n. A memory location that is *far* away from where the program counter should be pointing, often inaccessible because it is not even mapped in. "Another core dump --- looks like the program jumped off to hyperspace someho...
I see no X here. => Hackers (and the interactive computer games they write) traditionally favor this slightly marked usage over other possible equivalents such as "There's no X here!" or "X is missing." or "Where's the X?". This goes back to the orig...
I see no X here.2 => respond in this wise if you asked it to do something involving an object not present at your location in the game. 
i14y => // n. Abbrev. for `interoperability', with the `14' replacing fourteen letters. Used in the X (windows) community. Refers to portability and compatibility of data formats (even binary ones) between different programs or implementations of the...
i18n => // n. Abbrev. for `internationaliz,sation', with the 18 replacing 18 letters. Used in the X (windows) community.
IBM => /I-B-M/ Inferior But Marketable; It's Better Manually; Insidious Black Magic; It's Been Malfunctioning; Incontinent Bowel Movement; and a near-infinite number of even less complimentary expansions, including `International Business Machines'. ...
IBM discount => n. A price increase. Outside IBM, this derives from the common perception that IBM products are generally overpriced (see clone); inside, it is said to spring from a belief that large numbers of IBM employees living in an area cause p...
ice => [coined by USENETter Tom Maddox, popularized by William Gibson's cyberpunk SF novels acronym for `Intrusion Countermeasure Electronics'] Security software (in Gibson's novels, software that responds to intrusion by attempting to literally kill...
ifdef out => /if'def owt/ v. Syn. for {condition out}, specific to C.
ill-behaved => adj. 1. [numerical analysis] Said of an algorithm or computational method that tends to blow up because of accumulated roundoff error or poor convergence properties. 2. Software that bypasses the defined OS interfaces to do things (lik...
IMHO => // [from SF fandom via USENET; acronym for `In My Humble Opinion'] "IMHO, mixed-case C names should be avoided, as mistyping something in the wrong case can cause hard-to-detect errors --- and they look too Pascalish anyhow." Also seen in var...
in the extreme => adj. A preferred superlative suffix for many hackish terms. See, for example, `obscure in the extreme' under obscure, and compare highly.
incantation => n. Any particularly arbitrary or obscure command that one must mutter at a system to attain a desired result. Not used of passwords or other explicit security features. Especially used of tricks that are so poorly documented they must ...
include => vt. [USENET] 1. To duplicate a portion (or whole) of another's message (typically with attribution to the source) in a reply or followup, for clarifying the context of one's response. See the the discussion of inclusion styles under "Hacke...
include war => n. Excessive multi-leveled including within a discussion thread, a practice that tends to annoy readers. In a forum with high-traffic newsgroups, such as USENET, this can lead to flames and the urge to start a {kill file}.
indent style => [C programmers] n. The rules one uses to indent code in a readable fashion; a subject of {holy wars}. There are four major C indent styles, described below; all have the aim of making it easier for the reader to visually track the sco...
indent style2 => significant variable is the placement of `{' and `}' with respect to the statement(s) they enclose and the guard or controlling statement (`if', `else', `for', `while', or `do') on the block, if any. `K&R style' --- Named after Kerni...
indent style3 => examples in K&R are formatted this way. Also called `kernel style' because the UNIX kernel is written in it, and the `One True Brace Style' (abbrev. 1TBS) by its partisans. The basic indent shown here is eight spaces (or one tab) per...
indent style4 => seen, but are much less common. if (cond) { <body> } `Allman style' --- Named for Eric Allman, a Berkeley hacker who wrote a lot of the BSD utilities in it (it is sometimes called `BSD style'). Resembles normal indent style in Pascal...
indent style5 => indent per level shown here is eight spaces, but four is just as common (esp. in C++ code). if (cond) { <body> } `Whitesmiths style' --- popularized by the examples that came with Whitesmiths C, an early commercial C compiler. Basic ...
indent style6 => level shown here is eight spaces, but four is occasionally seen. if (cond) { <body> } `GNU style' --- Used throughout GNU EMACS and the Free Software Foundation code, and just about nowhere else. Indents are always four spaces per Se...
indent style7 => level, with `{' and `}' halfway between the outer and inner indent levels. if (cond) { <body> } Surveys have shown the Allman and Whitesmiths styles to be the most common, with about equal mind shares. K&R/1TBS used to be nearly univ...
indent style8 => now much less common (the opening brace tends to get lost against the right paren of the guard part in an `if' or `while', which is a {Bad Thing}). Defenders of 1TBS argue that any putative gain in readability is less important than ...
indent style9 => vertical space, which enables one to see more code on one's screen at once. Doubtless these issues will continue to be the subject of {holy wars}. 
index => n. See coefficient.
infant mortality => n. It is common lore among hackers that the chances of sudden hardware failure drop off exponentially with a machine's time since power-up (that is, until the relatively distant time at which enough mechanical wear in I/O devices ...
infant mortality2 => components has accumulated for the machine to start going senile). Up to half of all chip and wire failures happen within a new system's first few weeks; such failures are often referred to as `infant mortality' problems (or, occ...
infant mortality3 => syndrome'). See {bathtub curve}, {burn-in period}. 
infinite => adj. Consisting of a large number of objects; extreme. Used very loosely as in "This program produces infinite garbage." "He is an infinite loser." The word most likely to follow `infinite', though, is hair (it has been pointed out that f...
infinite loop => n. One that never terminates (that is, the machine spins or buzzes forever; the usual symptom is catatonia). There is a standard joke that has been made about each generation's exemplar of the ultra-fast machine "The Cray-3 is so fas...
infinite loop2 => loop in under 2 seconds!" 
infinity => n. 1. The largest value that can be represented in a particular type of variable (register, memory location, data type, whatever). 2. `minus infinity' The smallest such value, not necessarily or even usually the simple negation of plus in...
insanely great => adj. [Mac community, from Steve Jobs; also BSD UNIX people via Bill Joy] Something so incredibly elegant that it is imaginable only to someone possessing the most puissant of hacker-natures.
INTERCAL => /in't*r-kal/ [said by the authors to stand for `Compiler Language With No Pronounceable Acronym'] n. A computer language designed by Don Woods and James Lyon in 1972. INTERCAL is purposely different from all other computer languages in al...
interesting => adj. In hacker parlance, this word has strong connotations of `annoying', or `difficult', or both. Hackers relish a challenge, and enjoy wringing all the irony possible out of the ancient Chinese curse "May you live in interesting time...
Internet address => n. 1. [techspeak] An absolute network address of the form foo@bar.baz, where foo is a user name, bar is a sitename, and baz is a `domain' name, possibly including periods itself. Contrast with {bang path}; see also {network, the} ...
Internet address2 => Internet machines and most UUCP sites can now resolve these addresses, thanks to a large amount of behind-the-scenes magic and PD software written since 1980 or so. See also {bang path}, domainist. 2. More loosely, any network ad...
Internet address3 => this includes {bang path} addresses and some internal corporate and government networks. Reading Internet addresses is something of an art. Here are the four most important top-level functional Internet domains followed by a sele...
Internet address4 => com commercial organizations edu educational institutions gov U.S. government civilian sites mil U.S. military sites Note that most of the sites in the com and edu domains are in the U.S. or Canada. us sites in See: Internet addr...
Internet address5 => the U.S. outside the functional domains su sites in the Soviet Union (see kremvax). uk sites in the United Kingdom Within the us domain, there are subdomains for the fifty states, each generally with a name identical to the state...
Internet address6 => abbreviation. Within the uk domain, there is an ac subdomain for academic sites and a co domain for commercial ones. Other top-level domains may be divided up in similar ways. 
interrupt => 1. [techspeak] n. On a computer, an event that interrupts normal processing and temporarily diverts flow-of-control through an "interrupt handler" routine. See also trap. 2. interj. A request for attention from a hacker. Often explicitly...
interrupt list, the => [MS-DOS] n. The list of all known software interrupt calls (both documented and undocumented) for IBM PCs and compatibles, maintained and made available for free redistribution by Ralf Brown (ralf@cs.cmu.edu). As of early 1991,...
interrupts locked out => When someone is ignoring you. In a restaurant, after several fruitless attempts to get the waitress's attention, a hacker might well observe "She must have interrupts locked out". The synonym `interrupts disabled' is also com...
interrupts locked out2 => have one's interrupt mask bit set" or "interrupts masked out" is also heard. See also spl. 
iron => n. Hardware, especially older and larger hardware of mainframe class with big metal cabinets housing relatively low-density electronics (but the term is also used of modern supercomputers). Often in the phrase {big iron}. Oppose silicon. See ...
Iron Age => n. In the history of computing, 1961--1971 --- the formative era of commercial mainframe technology, when {big iron} dinosaurs ruled the earth. These began with the delivery of the first PDP-1, coincided with the dominance of ferrite core...
Iron Age2 => introduction of the first commercial microprocessor (the Intel 4004) in 1971. See also {Stone Age}; compare {elder days}. 
iron box => [UNIX/Internet] n. A special environment set up to trap a cracker logging in over remote connections long enough to be traced. May include a modified shell restricting the hacker's movements in unobvious ways, and `bait' files designed to...
iron box2 => on. See also {back door}, {firewall machine}, {Venus flytrap}, and Clifford Stoll's account in `The Cuckoo's Egg' of how he made and used one (see the Bibliography). Compare {padded cell}. 
ironmonger => [IBM] n. Derogatory. A hardware specialist. Compare sandbender, {polygon pusher}.
ITS => /I-T-S/ n. 1. Incompatible Time-sharing System, an influential but highly idiosyncratic operating system written for PDP-6s and PDP-10s at MIT and long used at the MIT AI Lab. Much AI-hacker jargon derives from ITS folklore, and to have been `...
IWBNI => // [acronym] `It Would Be Nice If'. Compare WIBNI.
IYFEG => // [USENET] Abbreviation for `Insert Your Favorite Ethnic Group'. Used as a meta-name when telling racist jokes on the net to avoid offending anyone. See JEDR.*J. Random /J rand'm/ n. [generalized from {J. Random Hacker}] Arbitrary; ordinary...
J. Random Hacker => [MIT] /J rand'm hak'r/ n. A mythical figure like the Unknown Soldier; the archetypal hacker nerd. See random, {Suzie COBOL}. This may originally have been inspired or influenced by `J. Fred Muggs', a show-biz chimpanzee whose name...
jaggies => /jag'eez/ n. The `stairstep' effect observable when an edge (esp. a linear edge of very shallow or steep slope) is rendered on a pixel device (as opposed to a vector display).
JCL => /J-C-L/ n. 1. IBM's supremely rude Job Control Language. JCL is the script language used to control the execution of programs in IBM's batch systems. JCL has a very fascist syntax, and some versions will, for example, barf if two spaces appear...
JEDR => // n. Synonymous with IYFEG. At one time, people in the USENET newsgroup rec.humor.funny tended to use `JEDR' instead of IYFEG or `<ethnic>'; this stemmed from a public attempt to suppress the group once made by a loser with initials JEDR aft...
JFCL => /jif'kl/, /jaf'kl/, /j*-fi'kl/ vt., obs. (alt. `jfcl') To cancel or annul something. "Why don't you jfcl that out?" The fastest do-nothing instruction on older models of the PDP-10 happened to be JFCL, which stands for "Jump if Flag set and t...
jiffy => n. 1. The duration of one tick of the system clock on the computer (see tick). Often one AC cycle time (1/60 second in the U.S. and Canada, 1/50 most other places), but more recently 1/100 sec has become common. "The swapper runs every 6 jif...
job security => n. When some piece of code is written in a particularly obscure fashion, and no good reason (such as time or space optimization) can be discovered, it is often said that the programmer was attempting to increase his job security (i.e....
job security2 => for maintenance). This sour joke seldom has to be said in full; if two hackers are looking over some code together and one points at a section and says "job security", the other one may just nod. 
jock => n. 1. A programmer who is characterized by large and somewhat brute-force programs. See {brute force}. 2. When modified by another noun, describes a specialist in some particular computing area. The compounds `compiler jock' and `systems jock...
joe code => /joh' kohd`/ n. 1. Code that is overly tense and unmaintainable. "Perl may be a handy program, but if you look at the source, it's complete joe code." 2. Badly written, possibly buggy code. Correspondents wishing to remain anonymous have ...
joe code2 => the Lawrence Berkeley Laboratory and observed that usage has drifted slightly; the original sobriquet `Joe code' was intended in sense 1. 
JR[LN] => /J-R-L/, /J-R-N/ n. The names JRL and JRN were sometimes used as example names when discussing a kind of user ID used under {TOPS-10}; they were understood to be the initials of (fictitious) programmers named `J. Random Loser' and `J. Rando...
JRST => /jerst/ [based on the PDP-10 jump instruction] v.,obs. To suddenly change subjects, with no intention of returning to the previous topic. Usage rather rare except among PDP-10 diehards, and considered silly. See also AOS.
juggling eggs => vi. Keeping a lot of state in your head while modifying a program. "Don't bother me now, I'm juggling eggs", means that an interrupt is likely to result in the program's being scrambled. In the classic first-contact SF novel `The Mot...
juggling eggs2 => and Jerry Pournelle, an alien describes a very difficult task by saying "We juggle priceless eggs in variable gravity." That is a very hackish use of language. See also {hack mode}. 
jump off into never-never land => [from J. M. Barrie's `Peter Pan'] v. Same as {branch to Fishkill}, but more common in technical cultures associated with non-IBM computers that use the term `jump' rather than `branch'. Compare hyperspace.*K /K/ [fro...
jump off into never-never land2 => used both as a spoken word and a written suffix (like meg and gig for megabyte and gigabyte). See {quantifiers}. 
K&R => [Kernighan and Ritchie] n. Brian Kernighan and Dennis Ritchie's book `The C Programming Language', esp. the classic and influential first edition (Prentice-Hall 1978; ISBN 0-113-110163-3). Syn. {White Book}, {Old Testament}. See also {New Test...
kahuna => /k*-hoo'nuh/ [IBM from the Hawaiian title for a shaman] n. Synonym for wizard, guru.
kamikaze packet => n. The `official' jargon for what is more commonly called a {Christmas tree packet}. RFC-1025, `TCP and IP Bake Off' says 10 points for correctly being able to process a "Kamikaze" packet (AKA nastygram, christmas tree packet, lamp...
kamikaze packet2 => is, correctly handle a segment with the maximum combination of features at once (e.g., a SYN URG PUSH FIN segment with options and data). See also {Chernobyl packet}. 
kangaroo code => n. Syn. {spaghetti code}.
ken => /ken/ n. 1. [UNIX] Ken Thompson, principal inventor of UNIX. In the early days he used to hand-cut distribution tapes, often with a note that read "Love, ken". Old-timers still use his first name (sometimes uncapitalized, because it's a login ...
kgbvax => /K-G-B'vaks/ n. See kremvax.
kill file => [USENET] n. (alt. `KILL file') Per-user file(s) used by some USENET reading programs (originally Larry Wall's `rn(1)') to discard summarily (without presenting for reading) articles matching some particularly uninteresting (or unwanted) ...
kill file2 => other header lines. Thus to add a person (or subject) to one's kill file is to arrange for that person to be ignored by one's newsreader in future. By extension, it may be used for a decision to ignore the person or subject in other med...
killer micro => [popularized by Eugene Brooks] n. A microprocessor-based machine that infringes on mini, mainframe, or supercomputer performance turf. Often heard in "No one will survive the attack of the killer micros!", the battle cry of the downsi...
killer micro2 => architectures. The popularity of the phrase `attack of the killer micros' is doubtless reinforced by the movie title "Attack Of The Killer Tomatoes" (one of the canonical examples of so-bad-it's-wonderful among hackers). This has eve...
killer micro3 => micros have gone on the offensive not just individually (in workstations) but in hordes (within massively parallel computers). 
killer poke => n. A recipe for inducing hardware damage on a machine via insertion of invalid values (see poke) in a memory-mapped control register; used esp. of various fairly well-known tricks on {bitty box}es without hardware memory management (su...
killer poke2 => that can overload and trash analog electronics in the monitor. See also HCF. 
kilo- => [SI] pref. See {quantifiers}.
KIPS => /kips/ [acronym, by analogy with MIPS using K] n. Thousands (*not* 1024s) of Instructions Per Second. Usage rare.
KISS Principle => /kis' prin'si-pl/ n. "Keep It Simple, Stupid". A maxim often invoked when discussing design to fend off {creeping featurism} and control development complexity. Possibly related to the marketroid maxim on sales presentations, "Keep ...
kit => [USENET] n. A source software distribution that has been packaged in such a way that it can (theoretically) be unpacked and installed according to a series of steps using only standard UNIX tools, and entirely documented by some reasonable cha...
klone => /klohn/ n. See clone, sense 4.
kludge => /kluhj/ n. Common (but incorrect) variant of kluge, q.v.
kluge => /klooj/ [from the German `klug', clever] 1. n. A Rube Goldberg (or Heath Robinson) device, whether in hardware or software. (A long-ago `Datamation' article by Jackson Granholme said "An ill-assorted collection of poorly matching parts, form...
kluge around => vt. To avoid a bug or difficult condition by inserting a kluge. Compare workaround.
kluge up => vt. To lash together a quick hack to perform a task; this is milder than {cruft together} and has some of the connotations of {hack up} (note, however, that the construction `kluge on' corresponding to {hack on} is never used). "I've klug...
kluge up2 => buffer contents to a safe place." 
Knights of the Lambda Calculus => n. A semi-mythical organization of wizardly LISP and Scheme hackers. The name refers to a mathematical formalism invented by Alonzo Church, with which LISP is intimately connected. There is no enrollment list and the...
Knights of the Lambda Calculus2 => unclear, but one well-known LISPer has been known to give out buttons and, in general, the *members* know who they are.... 
Knuth => [Donald E. Knuth's `The Art of Computer Programming'] n. Mythically, the reference that answers all questions about data structures or algorithms. A safe answer when you do not know "I think you can find that in Knuth." Contrast {literature,...

factpacks/jargon.fact  view on Meta::CPAN

lost in the noise2 => astronomers, and statisticians all use it. 
lost in the underflow => adj. Too small to be worth considering; more specifically, small beyond the limits of accuracy or measurement. This is a reference to `floating underflow', a condition that can occur when a floating-point arithmetic processor...
lost in the underflow2 => than its limit of magnitude. It is also a pun on `undertow' (a kind of fast, cold current that sometimes runs just offshore and can be dangerous to swimmers). "Well, sure, photon pressure from the stadium lights alters the p...
lost in the underflow3 => effect gets lost in the underflow." See also {overflow bit}. 
lots of MIPS but no I/O => adj. Used to describe a person who is technically brilliant but can't seem to communicate with human beings effectively. Technically it describes a machine that has lots of processing power but is bottlenecked on input-outp...
lots of MIPS but no I/O2 => RS/6000, is a notorious recent example). 
low-bandwidth => [from communication theory] adj. Used to indicate a talk that, although not content-free, was not terribly informative. "That was a low-bandwidth talk, but what can you expect for an audience of suits!" Compare zero-content, bandwidt...
LPT => /L-P-T/ or /lip'it/ or /lip-it'/ [MIT, via DEC] n. Line printer, of course. Rare under UNIX, commoner in hackers with MS-DOS or CP/M background. The printer device is called `LPT' on those systems that, like ITS, were strongly influenced by ea...
lunatic fringe => [IBM] n. Customers who can be relied upon to accept release 1 versions of software.
lurker => n. One of the `silent majority' in a electronic forum; one who posts occasionally or not at all but is known to read the group's postings regularly. This term is not pejorative and indeed is casually used reflexively "Oh, I'm just lurking."...
luser => /loo'zr/ n. A user; esp. one who is also a loser. (luser and loser are pronounced identically.) This word was coined around 1975 at MIT. Under ITS, when you first walked up to a terminal at MIT and typed Control-Z to get the computer's atten...
macdink => /mak'dink/ [from the Apple Macintosh, which is said to encourage such behavior] vt. To make many incremental and unnecessary cosmetic changes to a program or file. Often the subject of the macdinking would be better off without them. "When...
machinable => adj. Machine-readable. Having the softcopy nature.
machoflops => /mach'oh-flops/ [pun on `megaflops', a coinage for `millions of FLoating-point Operations Per Second'] n. Refers to artificially inflated performance figures often quoted by computer manufacturers. Real applications are lucky to get hal...
Macintoy => /mak'in-toy/ n. The Apple Macintosh, considered as a toy. Less pejorative than Macintrash.
Macintrash => /mak'in-trash`/ n. The Apple Macintosh, as described by a hacker who doesn't appreciate being kept away from the *real computer* by the interface. The term maggotbox has been reported in regular use in the Research Triangle area of Nort...
macro => /mak'roh/ [techspeak] n. A name (possibly followed by a formal arg list) that is equated to a text or symbolic expression to which it is to be expanded (possibly with the substitution of actual arguments) by a macro expander. This definition...
macro- => pref. Large. Opposite of micro-. In the mainstream and among other technical cultures (for example, medical people) this competes with the prefix mega-, but hackers tend to restrict the latter to quantification.
macrology => /mak-rol'*-jee/ n. 1. Set of usually complex or crufty macros, e.g., as part of a large system written in LISP, TECO, or (less commonly) assembler. 2. The art and science involved in comprehending a macrology in sense 1. Sometimes studyi...
macrotape => /ma'kroh-tayp/ n. An industry-standard reel of tape, as opposed to a microtape.
maggotbox => /mag'*t-boks/ n. See Macintrash. This is even more derogatory.
magic => adj. 1. As yet unexplained, or too complicated to explain; compare automagically and (Arthur C.) Clarke's Third Law: "Any sufficiently advanced technology is indistinguishable from magic." "TTY echoing is controlled by a large number of magi...
magic cookie => [UNIX] n. 1. Something passed between routines or programs that enables the receiver to perform some operation; a capability ticket or opaque identifier. Especially used of small data objects that contain data encoded in a strange or ...
magic cookie2 => E.g., on non-UNIX OSes with a non-byte-stream model of files, the result of `ftell(3)' may be a magic cookie rather than a byte offset; it can be passed to `fseek(3)', but not operated on in any meaningful way. The phrase `it hands y...
magic cookie3 => a result whose contents are not defined but which can be passed back to the same or some other program later. 2. An in-band code for changing graphic rendition (e.g., inverse video or underlining) or performing other control function...
magic cookie4 => leave a blank on the screen corresponding to mode-change magic cookies; this was also called a glitch. See also cookie. 
magic number => [UNIX/C] n. 1. In source code, some non-obvious constant whose value is significant to the operation of a program and that is inserted inconspicuously in-line (hardcoded), rather than expanded in by a symbol set by a commented `#defin...
magic number2 => are bad style. 2. A number that encodes critical information used in an algorithm in some opaque way. The classic examples of these are the numbers used in hash or CRC functions, or the coefficients in a linear congruential generator...
magic number3 => sense actually predates and was ancestral to the more common sense 1. 3. Special data located at the beginning of a binary data file to indicate its type to a utility. Under UNIX, the system and various applications programs (especia...
magic number4 => types of executable file by looking for a magic number. Once upon a time, these magic numbers were PDP-11 branch instructions that skipped over header data to the start of executable code; the 0407, for example, was octal for `branch...
magic number5 => wizard knows the spells to create magic numbers. How do you choose a fresh magic number of your own? Simple --- you pick one at random. See? It's magic! 
magic smoke => n. A substance trapped inside IC packages that enables them to function (also called `blue smoke'; this is similar to the archaic `phlogiston' hypothesis about combustion). Its existence is demonstrated by what happens when a chip burn...
magic smoke2 => out, so it doesn't work any more. See {smoke test}, {let the smoke out}. USENETter Jay Maynard tells the following story: "Once, while hacking on a dedicated Z80 system, I was testing code by blowing EPROMs and plugging them in the sy...
magic smoke3 => One time, I plugged one in backwards. I only discovered that *after* I realized that Intel didn't put power-on lights under the quartz windows on the tops of their EPROMs --- the die was glowing white-hot. Amazingly, the EPROM worked ...
magic smoke4 => full of zeros, then erased it again. For all I know, it's still in service. Of course, this is because the magic smoke didn't get let out." Compare the original phrasing of {Murphy's Law}. 
main loop => n. Software tools are often written to perform some actions repeatedly on whatever input is handed to them, terminating when there is no more input or they are explicitly told to go away. In such programs, the loop that gets and processe...
mainframe => n. This term originally referred to the cabinet containing the central processor unit or `main frame' of a room-filling {Stone Age} batch machine. After the emergence of smaller `minicomputer' designs in the early 1970s, the traditional ...
management => n. 1. Corporate power elites distinguished primarily by their distance from actual productive work and their chronic failure to manage (see also suit). Spoken derisively, as in "*Management* decided that ...". 2. Mythically, a vast bure...
mandelbug => /mon'del-buhg/ [from the Mandelbrot set] n. A bug whose underlying causes are so complex and obscure as to make its behavior appear chaotic or even non-deterministic. This term implies that the speaker thinks it is a {Bohr bug}, rather t...
manged => /monjd/ [probably from the French `manger' or Italian `mangiare', to eat; perhaps influenced by English n. `mange', `mangy'] adj. Refers to anything that is mangled or damaged, usually beyond repair. "The disk was manged after the electrica...
mangle => vt. Used similarly to mung or scribble, but more violent in its connotations; something that is mangled has been irreversibly and totally trashed.
mangler => [DEC] n. A manager. Compare mango; see also management. Note that {system mangler} is somewhat different in connotation.
mango => /mang'go/ [orig. in-house jargon at Symbolics] n. A manager. Compare mangler. See also devo and doco.
marbles => [from mainstream "lost all his/her marbles"] pl.n. The minimum needed to build your way further up some hierarchy of tools or abstractions. After a bad system crash, you need to determine if the machine has enough marbles to come up on its...
marginal => adj. 1. Extremely small. "A marginal increase in core can decrease GC time drastically." In everyday terms, this means that it is a lot easier to clean off your desk if you have a spare place to put some of the junk while you sort through...
Marginal Hacks => n. Margaret Jacks Hall, a building into which the Stanford AI Lab was moved near the beginning of the 1980s (from the {D. C. Power Lab}).
marginally => adv. Slightly. "The ravs here are only marginally better than at Small Eating Place." See epsilon.
marketroid => /mar'k*-troyd/ alt. `marketing slime', `marketing droid', `marketeer' n. A member of a company's marketing department, esp. one who promises users that the next version of a product will have features that are not actually scheduled for...
massage: vt. Vague term used to describe `smooth' transformations of => a data set into a different form, esp. transformations that do not lose information. Connotes less pain than munch or crunch. "He wrote a program that massages X bitmap files int...
math-out: [poss. from `white-out' (the blizzard variety)] n. A => paper or presentation so encrusted with mathematical or other formal notation as to be incomprehensible. This may be a device for concealing the fact that it is actually content-free. ...
Matrix: [FidoNet] n. 1. What the Opus BBS software and sysops call => FidoNet. 2. Fanciful term for a cyberspace expected to emerge from current networking experiments (see {network, the}). Some people refer to the totality of present networks this w...
Mbogo, Dr. Fred: /*m-boh'goh, dok'tr fred/ [Stanford] n. The => archetypal man you don't want to see about a problem, esp. an incompetent professional; a shyster. "Do you know a good eye doctor?" "Sure, try Mbogo Eye Care and Professional Dry Cleanin...
Mbogo, Dr. Fred: /*m-boh'goh, dok'tr fred/ [Stanford] n. The2 => between bogus and the original Dr. Mbogo, a witch doctor who was Gomez Addams' physician on the old "Addams Family" TV show. See also fred. 
meatware => n. Synonym for wetware. Less common.
meeces => /mees'*z/ [TMRC] n. Occasional furry visitors who are not urchins. [That is, mice. This may no longer be in live use; it clearly derives from the refrain of the early-1960s cartoon character Mr. Jinx: "I hate meeces to *pieces*!" --- ESR]
meg => /meg/ n. See {quantifiers}.
mega- => /me'g*/ [SI] pref. See {quantifiers}.
megapenny => /meg'*-pen`ee/ n. $10,000 (1 cent * 10^6). Used semi-humorously as a unit in comparing computer cost and performance figures.
MEGO => /me'goh/ or /mee'goh/ [`My Eyes Glaze Over', often `Mine Eyes Glazeth (sic) Over', attributed to the futurologist Herman Kahn] Also `MEGO factor'. 1. n. A handwave intended to confuse the listener and hopefully induce agreement because the li...
meltdown, network => n. See {network meltdown}.
meme => /meem/ [coined on analogy with `gene' by Richard Dawkins] n. An idea considered as a replicator, esp. with the connotation that memes parasitize people into propagating them much as viruses do. Used esp. in the phrase `meme complex' denoting ...
meme plague => n. The spread of a successful but pernicious meme, esp. one that parasitizes the victims into giving their all to propagate it. Astrology, BASIC, and the other guy's religion are often considered to be examples. This usage is given poi...
meme plague2 => `joiner' ideologies like Naziism or various forms of millennarian Christianity have exhibited plague-like cycles of exponential growth followed by collapses to small reservoir populations. 
memetics => /me-met'iks/ [from meme] The study of memes. As of mid-1991, this is still an extremely informal and speculative endeavor, though the first steps towards at least statistical rigor have been made by H. Keith Henson and others. Memetics is...
memory leak => n. An error in a program's dynamic-store allocation logic that causes it to fail to reclaim discarded memory, leading to eventual collapse due to memory exhaustion. Also (esp. at CMU) called {core leak}. See {aliasing bug}, {fandango o...
memory leak2 => {precedence lossage}, {overrun screw}, {leaky heap}, leak. 
menuitis => /men`yoo-i:'tis/ n. Notional disease suffered by software with an obsessively simple-minded menu interface and no escape. Hackers find this intensely irritating and much prefer the flexibility of command-line or language-style interfaces,...
mess-dos => /mes-dos/ n. Derisory term for MS-DOS. Often followed by the ritual banishing "Just say No!" See {MS-DOS}. Most hackers (even many MS-DOS hackers) loathe MS-DOS for its single-tasking nature, its limits on application size, its nasty prim...
meta => /me't*/ or /may't*/ or (Commonwealth) /mee't*/ [from analytic philosophy] adj.,pref. One level of description up. A meta-syntactic variable is a variable in notation used to describe syntax, and meta-language is language used to describe lang...
meta bit => n. The top bit of an 8-bit character, which is on in character values 128--255. Also called {high bit}, {alt bit}, or hobbit. Some terminals and consoles (see {space-cadet keyboard}) have a META shift key. Others (including, *mirabile dic...
meta bit2 => machines) have an ALT key. See also {bucky bits}. 
MFTL => /M-F-T-L/ [acronym: `My Favorite Toy Language'] 1. adj. Describes a talk on a programming language design that is heavy on the syntax (with lots of BNF), sometimes even talks about semantics (e.g., type systems), but rarely, if ever, has any ...
mickey => n. The resolution unit of mouse movement. It has been suggested that the `disney' will become a benchmark unit for animation graphics performance.
mickey mouse program => n. North American equivalent of a noddy (that is, trivial) program. Doesn't necessarily have the belittling connotations of mainstream slang "Oh, that's just mickey mouse stuff!"; sometimes trivial programs can be very useful.
micro- => pref. 1. Very small; this is the root of its use as a quantifier prefix. 2. A quantifier prefix, calling for multiplication by 10^-6 (see {quantifiers}). Neither of these uses is peculiar to hackers, but hackers tend to fling them both arou...
microfortnight => n. About 1.2 sec. The VMS operating system has a lot of tuning parameters that you can set with the SYSGEN utility, and one of these is TIMEPROMPTWAIT, the time the system will wait for an operator to set the correct date and time a...
microLenat => /mi:-kroh-len'-*t/ n. See bogosity.
microReid => /mi:'kroh-reed/ n. See bogosity.
Microsloth Windows => /mi:'kroh-sloth` win'dohz/ n. Hackerism for `Microsoft Windows', a windowing system for the IBM-PC which is so limited by bug-for-bug compatibility with mess-dos that it is agonizingly slow on anything less than a fast 386. Comp...
microtape => /mi:'kroh-tayp/ n. Occasionally used to mean a DECtape, as opposed to a macrotape. A DECtape is a small reel, about 4 inches in diameter, of magnetic tape about an inch wide. Unlike drivers for today's macrotapes, microtape drivers allow...
middle-endian => adj. Not big-endian or little-endian. Used of perverse byte orders such as 3-4-1-2 or 2-1-4-3, occasionally found in the packed-decimal formats of minicomputer manufacturers who shall remain nameless. See {NUXI problem}.
milliLampson => /mil'*-lamp`sn/ n. A unit of talking speed, abbreviated mL. Most people run about 200 milliLampsons. Butler Lampson (a CS theorist and systems implementor highly regarded among hackers) goes at 1000. A few people speak faster. This un...
minifloppies => n. 5.25-inch vanilla floppy disks, as opposed to 3.5-inch or microfloppies and the now-obsolescent 8-inch variety. At one time, this term was a trademark of Shugart Associates for their SA-400 minifloppy drive. Nobody paid any attenti...
MIPS => /mips/ [acronym] n. 1. A measure of computing speed; formally, `Million Instructions Per Second' (that's 10^6 per second, not 2^20!); often rendered by hackers as `Meaningless Indication of Processor Speed' or in other unflattering ways. This...
misbug => /mis-buhg/ [MIT] n. An unintended property of a program that turns out to be useful; something that should have been a bug but turns out to be a feature. Usage: rare. Compare {green lightning}. See miswart.
misfeature => /mis-fee'chr/ or /mis'fee`chr/ n. A feature that eventually causes lossage, possibly because it is not adequate for a new situation which has evolved. It is not the same as a bug, because fixing it involves a substantial philosophical c...
Missed'em-five => n. Pejorative hackerism for AT&T System V UNIX, generally used by BSD partisans in a bigoted mood. (The synonym `SysVile' is also encountered.) See {software bloat}, Berzerkeley.
miswart => /mis-wort/ [from wart by analogy with misbug] n. A feature that superficially appears to be a wart but has been determined to be the {Right Thing}. For example, in some versions of the EMACS text editor, the `transpose characters' command ...
mod => vt.,n. 1. Short for `modify' or `modification'. Very commonly used --- in fact the full terms are considered markers that one is being formal. The plural `mods' is used esp. with reference to bug fixes or minor design changes in hardware or so...
mode => n. A general state, usually used with an adjective describing the state. Use of the word `mode' rather than `state' implies that the state is extended over time, and probably also that some activity characteristic of that state is being carri...
mode bit => n. A flag, usually in hardware, that selects between two (usually quite different) modes of operation. The connotations are different from flag bit in that mode bits are mainly written during a boot or set-up phase, are seldom explicitly ...
mode bit2 => lifetime of an ordinary program. The classic example was the EBCDIC-vs.-ASCII bit (#12) of the Program Status Word of the IBM 360. Another was the bit on a PDP-12 that controlled whether it ran the PDP-8 or the LINC instruction set. 
modulo => /mo'dyu-loh/ prep. Except for. From mathematical terminology; one can consider saying that 4 = 22 except for the 9s (4 = 22 mod 9). "Well, LISP seems to work okay now, modulo that GC bug." "I feel fine today modulo a slight headache."
molly-guard => /mol'ee-gard/ [University of Illinois] n. A shield to prevent tripping of some {Big Red Switch} by clumsy or ignorant hands. Originally used of some plexiglass covers improvised for the BRS on an IBM 4341 after a programmer's toddler d...
Mongolian Hordes technique => n. Development by {gang bang} (poss. from the Sixties counterculture expression `Mongolian clusterfuck' for a public orgy). Implies that large numbers of inexperienced programmers are being put on a job better performed ...
Mongolian Hordes technique2 => `Chinese Army technique'; see also {Brooks's Law}. 
monkey up => vt. To hack together hardware for a particular task, especially a one-shot job. Connotes an extremely crufty and consciously temporary solution. Compare {hack up}, {kluge up}, {cruft together}, {cruft together}.
monkey, scratch => n. See {scratch monkey}.
monstrosity => 1. n. A ridiculously elephantine program or system, esp. one that is buggy or only marginally functional. 2. The quality of being monstrous (see `Overgeneralization' in the discussion of jargonification). See also baroque.
Moof => /moof/ [MAC users] n. The Moof or `dogcow' is a semi-legendary creature that lurks in the depths of the Macintosh Technical Notes Hypercard stack V3.1; specifically, the full story of the dogcow is told in technical note #31 (the particular M...
Moore's Law => /morz law/ prov. The observation that the logic density of silicon integrated circuits has closely followed the curve (bits per square inch) = 2^{(n - 1962)}; that is, the amount of information storable in one square inch of silicon ha...
Moore's Law2 => since the technology was invented. See also {Parkinson's Law of Data}. 
moria => /mor'ee-*/ n. Like nethack and rogue, one of the large PD Dungeons-and-Dragons-like simulation games, available for a wide range of machines and operating systems. Extremely addictive and a major consumer of time better used for hacking.
MOTAS => /moh-toz/ [USENET: Member Of The Appropriate Sex, after MOTOS and MOTSS] n. A potential or (less often) actual sex partner. See also SO.
MOTOS => /moh-tohs/ [acronym from the 1970 U.S. census forms via USENET: Member Of The Opposite Sex] n. A potential or (less often) actual sex partner. See MOTAS, MOTSS, SO. Less common than MOTSS or MOTAS, which have largely displaced it.
MOTSS => /mots/ or /M-O-T-S-S/ [from the 1970 U.S. census forms via USENET, Member Of The Same Sex] n. Esp. one considered as a possible sexual partner. The gay-issues newsgroup on USENET is called soc.motss. See MOTOS and MOTAS, which derive from it...
mouse ahead => vi. Point-and-click analog of `type ahead'. To manipulate a computer's pointing device (almost always a mouse in this usage, but not necessarily) and its selection or command buttons before a computer program is ready to accept such in...
mouse ahead2 => accepting the input. Handling this properly is rare, but it can help make a {WIMP environment} much more usable, assuming the users are familiar with the behavior of the user interface. 
mouse around => vi. To explore public portions of a large system, esp. a network such as Internet via FTP or TELNET, looking for interesting stuff to snarf.
mouse belt => n. See {rat belt}.
mouse droppings => [MS-DOS] n. Pixels (usually single) that are not properly restored when the mouse pointer moves away from a particular location on the screen, producing the appearance that the mouse pointer has left droppings behind. The major cau...
mouse droppings2 => that write to the screen memory corresponding to the mouse pointer's current location without hiding the mouse pointer first, and mouse drivers that do not quite support the graphics mode in use. 
mouse elbow => n. A tennis-elbow-like fatigue syndrome resulting from excessive use of a {WIMP environment}. Similarly, `mouse shoulder'; GLS reports that he used to get this a lot before he taught himself to be ambimoustrous.
mouso => /mow'soh/ n. [by analogy with `typo'] An error in mouse usage resulting in an inappropriate selection or graphic garbage on the screen. Compare thinko, braino.
MS-DOS => /M-S-dos/ [MicroSoft Disk Operating System] n. A clone of {CP/M} for the 8088 crufted together in 6 weeks by hacker Tim Paterson, who is said to have regretted it ever since. Numerous features, including vaguely UNIX-like but rather broken ...
mu => /moo/ The correct answer to the classic trick question "Have you stopped beating your wife yet?". Assuming that you have no wife or you have never beaten your wife, the answer "yes" is wrong because it implies that you used to beat your wife an...
mudhead => n. Commonly used to refer to a MUD player who sleeps, breathes, and eats MUD. Mudheads have been known to fail their degrees, drop out, etc., with the consolation, however, that they made wizard level. When encountered in person, all a mud...
multician => /muhl-ti'shn/ [coined at Honeywell, ca. 1970] n. Competent user of {Multics}. Perhaps oddly, no one has ever promoted the analogous `Unician'.
Multics => /muhl'tiks/ n. [from "MULTiplexed Information and Computing Service"] An early (late 1960s) timesharing operating system co-designed by a consortium including MIT, GE, and Bell Laboratories. Very innovative for its time --- among other thi...
multitask => n. Often used of humans in the same meaning it has for computers, to describe a person doing several things at once (but see thrash). The term `multiplex', from communications technology (meaning to handle more than one channel at the sa...
mumblage => /muhm'bl*j/ n. The topic of one's mumbling (see mumble). "All that mumblage" is used like "all that stuff" when it is not quite clear how the subject of discussion works, or like "all that crap" when `mumble' is being used as an implicit ...
mumble => interj. 1. Said when the correct response is too complicated to enunciate, or the speaker has not thought it out. Often prefaces a longer answer, or indicates a general reluctance to get into a long discussion. "Don't you think that we coul...
munch => [often confused with mung, q.v.] vt. To transform information in a serial fashion, often requiring large amounts of computation. To trace down a data structure. Related to crunch and nearly synonymous with grovel, but connotes less pain.
munching => n. Exploration of security holes of someone else's computer for thrills, notoriety, or to annoy the system manager. Compare cracker. See also {hacked off}.
munching squares => n. A {display hack} dating back to the PDP-1 (ca. 1962, reportedly discovered by Jackson Wright), which employs a trivial computation (repeatedly plotting the graph Y = X XOR T for successive values of T --- see HAKMEM items 146--...
munching squares2 => display of moving and growing squares that devour the screen. The initial value of T is treated as a parameter, which, when well-chosen, can produce amazing effects. Some of these, later (re)discovered on the LISP machine, have b...
munching squares3 => (try AND for XOR and toggling points instead of plotting them), `munching w's', and `munching mazes'. More generally, suppose a graphics program produces an impressive and ever-changing display of some basic form, foo, on a displ...
munching squares4 => relatively simple program; then the program (or the resulting display) is likely to be referred to as `munching foos' (this is a good example of the use of the word foo as a metasyntactic variable). 
munchkin => /muhnch'kin/ [from the squeaky-voiced little people in L. Frank Baum's `The Wizard of Oz'] n. A teenage-or-younger micro enthusiast hacking BASIC or something else equally constricted. A term of mild derision --- munchkins are annoying bu...
mundane => [from SF fandom] n. 1. A person who is not in science fiction fandom. 2. A person who is not in the computer industry. In this sense, most often an adjectival modifier as in "in my mundane life...." See also {Real World}.
mung => /muhng/ alt. `munge' /muhnj/ [in 1960 at MIT, `Mash Until No Good'; sometime after that the derivation from the {{recursive acronym}} `Mung Until No Good' became standard] vt. 1. To make changes to a file, esp. large-scale and irrevocable cha...
Music => n. A common extracurricular interest of hackers (compare {{science-fiction fandom}}, {{oriental food}}; see also filk). Hackish folklore has long claimed that musical and programming abilities are closely related, and there has been at least...
mutter => vt. To quietly enter a command not meant for the ears, eyes, or fingers of ordinary mortals. Often used in `mutter an incantation'. See also wizard.
N => /N/ quant. 1. A large and indeterminate number of objects: "There were N bugs in that crock!" Also used in its original sense of a variable name: "This crock has N bugs, as N goes to infinity." (The true number of bugs is always at least N + 1.)...
nailed to the wall => [like a trophy] adj. Said of a bug finally eliminated after protracted, and even heroic, effort.
nailing jelly => vi. See {like nailing jelly to a tree}.
na"ive => adj. Untutored in the perversities of some particular program or system; one who still tries to do things in an intuitive way, rather than the right way (in really good designs these coincide, but most designs aren't `really good' in the ap...
na"ive user => n. A luser. Tends to imply someone who is ignorant mainly owing to inexperience. When this is applied to someone who *has* experience, there is a definite implication of stupidity.
NAK => /nak/ [from the ASCII mnemonic for 0010101] interj. 1. On-line joke answer to ACK?: "I'm not here." 2. On-line answer to a request for chat: "I'm not available." 3. Used to politely interrupt someone to tell them you don't understand their poi...
nano => /nan'oh/ [CMU: from `nanosecond'] n. A brief period of time. "Be with you in a nano" means you really will be free shortly, i.e., implies what mainstream people mean by "in a jiffy" (whereas the hackish use of `jiffy' is quite different --- s...
nano- => [SI: the next quantifier below micro-; meaning * 10^-9] pref. Smaller than micro-, and used in the same rather loose and connotative way. Thus, one has {nanotechnology} (coined by hacker K. Eric Drexler) by analogy with `microtechnology'; an...
nanoacre => /nan'oh-ay`kr/ n. A unit (about 2 mm square) of real estate on a VLSI chip. The term gets its giggle value from the fact that VLSI nanoacres have costs in the same range as real acres once one figures in design and fabrication-setup costs...
nanobot => /nan'oh-bot/ n. A robot of microscopic proportions, presumably built by means of {nanotechnology}. As yet, only used informally (and speculatively!). Also called a `nanoagent'.
nanocomputer => /nan'oh-k*m-pyoo'tr/ n. A computer whose switching elements are molecular in size. Designs for mechanical nanocomputers which use single-molecule sliding rods for their logic have been proposed. The controller for a nanobot would be a...
nanofortnight => [Adelaide University] n. 1 fortnight * 10^-9, or about 1.2 msec. This unit was used largely by students doing undergraduate practicals. See microfortnight, attoparsec, and micro-.
nanotechnology => /nan'-oh-tek-no`l*-jee/ n. A hypothetical fabrication technology in which objects are designed and built with the individual specification and placement of each separate atom. The first unequivocal nanofabrication experiments are ta...
nastygram => /nas'tee-gram/ n. 1. A protocol packet or item of email (the latter is also called a letterbomb) that takes advantage of misfeatures or security holes on the target system to do untoward things. 2. Disapproving mail, esp. from a net.god,...
Nathan Hale => n. An asterisk (see also splat, {ASCII}). Oh, you want an etymology? Notionally, from "I regret that I have only one asterisk for my country!", a misquote of the famous remark uttered by Nathan Hale just before he was hanged. Hale was ...
Nathan Hale2 => in the American War of Independence. 
nature => n. See {has the X nature}.
neat hack => n. 1. A clever technique. 2. A brilliant practical joke, where neatness is correlated with cleverness, harmlessness, and surprise value. Example: the Caltech Rose Bowl card display switch (see appendix A). See hack.
neep-neep => /neep neep/ [onomatopoeic, from New York SF fandom] n. One who is fascinated by computers. More general than hacker, as it need not imply more skill than is required to boot games on a PC. The derived noun `neep-neeping' applies specific...
neophilia => /nee`oh-fil'-ee-*/ n. The trait of being excited and pleased by novelty. Common trait of most hackers, SF fans, and members of several other connected leading-edge subcultures, including the pro-technology `Whole Earth' wing of the ecolo...
net.- => /net dot/ pref. [USENET] Prefix used to describe people and events related to USENET. From the time before the {Great Renaming}, when most non-local newsgroups had names beginning `net.'. Includes net.gods, `net.goddesses' (various charismat...
net.god => /net god/ n. Used to refer to anyone who satisfies some combination of the following conditions: has been visible on USENET for more than 5 years, ran one of the original backbone sites, moderated an important newsgroup, wrote news softwar...
net.personality => /net per`sn-al'-*-tee/ n. Someone who has made a name for him or herself on USENET, through either longevity or attention-getting posts, but doesn't meet the other requirements of net.godhood.
net.police => /net-p*-lees'/ n. (var. `net.cops') Those USENET readers who feel it is their responsibility to pounce on and flame any posting which they regard as offensive or in violation of their understanding of netiquette. Generally used sarcasti...
nethack => /net'hak/ [UNIX] n. A dungeon game similar to rogue but more elaborate, distributed in C source over USENET and very popular at UNIX sites and on PC-class machines (nethack is probably the most widely distributed of the freeware dungeon ga...
netiquette => /net'ee-ket/ or /net'i-ket/ [portmanteau from "network etiquette"] n. Conventions of politeness recognized on USENET, such as avoidance of cross-posting to inappropriate groups or refraining from commercial pluggery on the net.
netnews => /net'n[y]ooz/ n. 1. The software that makes USENET run. 2. The content of USENET. "I read netnews right after my mail most mornings."
netrock => /net'rok/ [IBM] n. A flame; used esp. on VNET, IBM's internal corporate network.
network address => n. (also `net address') As used by hackers, means an address on `the' network (see {network, the}; this is almost always a {bang path} or {{Internet address}}). Such an address is essential if one wants to be to be taken seriously ...
network address2 => or organizations that claim to understand, work with, sell to, or recruit from among hackers but *don't* display net addresses are quietly presumed to be clueless poseurs and mentally flushed (see flush, sense 4). Hackers often pu...
network address3 => business cards and wear them prominently in contexts where they expect to meet other hackers face-to-face (see also {{science-fiction fandom}}). This is mostly functional, but is also a signal that one identifies with hackerdom (l...
network address4 => tie-dyed T-shirts among Grateful Dead fans). Net addresses are often used in email text as a more concise substitute for personal names; indeed, hackers may come to know each other quite well by network names without ever learning...
network address5 => also sitename, domainist. 
network meltdown => n. A state of complete network overload; the network equivalent of thrashing. This may be induced by a {Chernobyl packet}. See also {broadcast storm}, {kamikaze packet}.
network, the => n. 1. The union of all the major noncommercial, academic, and hacker-oriented networks, such as Internet, the old ARPANET, NSFnet, BITNET, and the virtual UUCP and USENET `networks', plus the corporate in-house networks and commercial...
network, the2 => CompuServe) that gateway to them. A site is generally considered `on the network' if it can be reached through some combination of Internet-style (@-sign) and UUCP (bang-path) addresses. See {bang path}, {{Internet address}}, {networ...
network, the3 => conspiracy of libertarian hacker-subversives and anti-authoritarian monkeywrenchers described in Robert Anton Wilson's novel `Schr"odinger's Cat', to which many hackers have subsequently decided they belong (this is an example of {ha...
network, the4 => `network' is often abbreviated to `net'. "Are you on the net?" is a frequent question when hackers first meet face to face, and "See you on the net!" is a frequent goodbye. 
New Jersey => [primarily Stanford/Silicon Valley] adj. Brain-damaged or of poor design. This refers to the allegedly wretched quality of such software as C, C++, and UNIX (which originated at Bell Labs in Murray Hill, New Jersey). "This compiler bite...
New Jersey2 => from a compiler designed in New Jersey?" Compare {Berkeley Quality Software}. See also {UNIX conspiracy}. 
New Testament => n. [C programmers] The second edition of K&R's `The C Programming Language' (Prentice-Hall, 1988; ISBN 0-13-110362-8), describing ANSI Standard C. See K&R.

factpacks/jargon.fact  view on Meta::CPAN

real time3 => stack and she came up with an algorithm in real time." 
real user => n. 1. A commercial user. One who is paying *real* money for his computer usage. 2. A non-hacker. Someone using the system for an explicit purpose (a research project, a course, etc.) other than pure exploration. See user. Hackers who are...
real user2 => real users. "I need this fixed so I can do a problem set. I'm not complaining out of randomness, but as a real user." See also luser. 
Real World => n. 1. Those institutions at which `programming' may be used in the same sentence as `FORTRAN', `COBOL', `RPG', `IBM', `DBASE', etc. Places where programs do such commercially necessary but intellectually uninspiring things as generating...
Real World2 => 2. The location of non-programmers and activities not related to programming. 3. A bizarre dimension in which the standard dress is shirt and tie and in which a person's working hours are defined as 9 to 5 (see {code grinder}). 4. Anyw...
Real World3 => fellow, he's left MIT and gone into the Real World." Used pejoratively by those not in residence there. In conversation, talking of someone who has entered the Real World is not unlike speaking of a deceased person. See also {fear and ...
reality check => n. 1. The simplest kind of test of software or hardware; doing the equivalent of asking it what 2 + 2 is and seeing if you get 4. The software equivalent of a {smoke test}. 2. The act of letting a {real user} try out prototype softwa...
reaper => n. A prowler that GFRs files. A file removed in this way is said to have been `reaped'.
rectangle slinger => n. See {polygon pusher}.
recursion => n. See recursion. See also {tail recursion}.
recursive acronym => pl.n. A hackish (and especially MIT) tradition is to choose acronyms that refer humorously to themselves or to other acronyms. The classic examples were two MIT editors called EINE ("EINE Is Not EMACS") and ZWEI ("ZWEI Was EINE I...
recursive acronym2 => a Scheme compiler called LIAR (Liar Imitates Apply Recursively), and GNU (q.v., sense 1) stands for "GNU's Not UNIX!" --- and a company with the name CYGNUS, which expands to "Cygnus, Your GNU Support". See also mung, EMACS. 
Red Book => n. 1. Informal name for one of the three standard references on PostScript (`PostScript Language Reference Manual', Adobe Systems (Addison-Wesley, 1985; QA76.73.P67P67; ISBN 0-201-10174-2); the others are known as the {Green Book} and the...
Red Book2 => one of the 3 standard references on Smalltalk (`Smalltalk-80 The Interactive Programming Environment' by Adele Goldberg (Addison-Wesley, 1984; QA76.8.S635G638; ISBN 0-201-11372-4); this too is associated with blue and green books). 3. An...
Red Book3 => CCITT eighth plenary assembly. Until now, these have changed color each review cycle (1988 was {Blue Book}, 1992 will be {Green Book}); however, it is rumored that this convention is going to be dropped before 1992. These include, among ...
Red Book4 => and the Group 1 through 4 fax standards. 4. The new version of the {Green Book} (sense 4) --- IEEE 1003.1-1990, a.k.a ISO 9945-1 --- is (because of the color and the fact that it is printed on A4 paper) known in the U.S.A. as "the Ugly R...
Red Book5 => and in Europe as "the Ugly Red Book That's A Sensible Size". 5. The NSA `Trusted Network Interpretation' companion to the {Orange Book}. See also {{book titles}}. 
regexp => /reg'eksp/ [UNIX] n. (alt. `regex' or `reg-ex') 1. Common written and spoken abbreviation for `regular expression', one of the wildcard patterns used, e.g., by UNIX utilities such as `grep(1)', `sed(1)', and `awk(1)'. These use conventions ...
reinvent the wheel => v. To design or implement a tool equivalent to an existing one or part of one, with the implication that doing so is silly or a waste of time. This is often a valid criticism. On the other hand, automobiles don't use wooden roll...
reinvent the wheel2 => be reinvented many times before you get them right. On the third hand, people reinventing the wheel do tend to come up with the moral equivalent of a trapezoid with an offset axle. 
religious issues => n. Questions which seemingly cannot be raised without touching off {holy wars}, such as "What is the best operating system (or editor, language, architecture, shell, mail reader, news reader)?", "What about that Heinlein guy, eh?"...
religious issues2 => Jargon File?" See {holy wars}; see also theology, bigot. This term is an example of {ha ha only serious}. People actually develop the most amazing and religiously intense attachments to their tools, even when the tools are intang...
religious issues3 => thing one can do when one stumbles into the crossfire is mumble {Get a life!} and leave --- unless, of course, one's *own* unassailably rational and obviously correct choices are being slammed. 
replicator => n. Any construct that acts to produce copies of itself; this could be a living organism, an idea (see meme), a program (see worm, wabbit, and virus), a pattern in a cellular automaton (see life, sense 1), or (speculatively) a robot or n...
reply => n. See followup.
reset => [the MUD community] v. In AberMUD, to bring all dead mobiles to life and move items back to their initial starting places. New players who can't find anything shout "Reset! Reset!" quite a bit. Higher-level players shout back "No way!" since...
restriction => n. A bug or design error that limits a program's capabilities, and which is sufficiently egregious that nobody can quite work up enough nerve to describe it as a feature. Often used (esp. by marketroid types) to make it sound as though...
retcon => /ret'kon/ [`retroactive continuity', from the USENET newsgroup rec.arts.comics] 1. n. The common situation in pulp fiction (esp. comics or soap operas) where a new story `reveals' things about events in previous stories, usually leaving the...
RETI => v. Syn. RTI
retrocomputing => /ret'-roh-k*m-pyoo'ting/ n. Refers to emulations of way-behind-the-state-of-the-art hardware or software, or implementations of never-was-state-of-the-art; esp. if such implementations are elaborate practical jokes and/or parodies o...
RFC => /R-F-C/ [Request For Comment] n. One of a long-established series of numbered Internet standards widely followed by commercial and PD software in the Internet and UNIX communities. Perhaps the single most influential one has been RFC-822 (the ...
RFE => /R-F-E/ n. 1. [techspeak] Request For Enhancement. 2. [from `Radio Free Europe', Bellcore and Sun] Radio Free Ethernet, a system (originated by Peter Langston) for broadcasting audio among Sun SPARCstations over the ethernet.
rib site => [by analogy with {backbone site}] n. A machine that has an on-demand high-speed link to a {backbone site} and serves as a regional distribution point for lots of third-party traffic in email and USENET news. Compare {leaf site}, {backbone...
rice box => [from ham radio slang] n. Any Asian-made commodity computer, esp. an 80x86-based machine built to IBM PC-compatible ISA or EISA-bus standards.
Right Thing => n. That which is compellingly the correct or appropriate thing to use, do, say, etc. Often capitalized, always emphasized in speech as though capitalized. Use of this term often implies that in fact reasonable people may disagree. "Wha...
Right Thing2 => do when it sees `(mod a 0)'? Should it return `a', or give a divide-by-0 error?" Oppose {Wrong Thing}. 
RL => // [MUD community] n. Real Life. "Firiss laughs in RL" means that Firiss's player is laughing. Oppose VR.
roach => [Bell Labs] vt. To destroy, esp. of a data structure. Hardware gets toasted or fried, software gets roached.
robust => adj. Said of a system that has demonstrated an ability to recover gracefully from the whole range of exceptional inputs and situations in a given environment. One step below bulletproof. Carries the additional connotation of elegance in add...
rococo => adj. Baroque in the extreme. Used to imply that a program has become so encrusted with the software equivalent of gold leaf and curlicues that they have completely swamped the underlying design. Called after the later and more extreme forms...
rogue => [UNIX] n. A Dungeons-and-Dragons-like game using character graphics, written under BSD UNIX and subsequently ported to other UNIX systems. The original BSD `curses(3)' screen-handling package was hacked together by Ken Arnold to support `rog...
room-temperature IQ => [IBM] quant. 80 or below. Used in describing the expected intelligence range of the luser. "Well, but how's this interface going to play with the room-temperature IQ crowd?" See {drool-proof paper}. This is a much more insultin...
root => [UNIX] n. 1. The superuser account that ignores permission bits, user number 0 on a UNIX system. This account has the user name `root'. The term avatar is also used. 2. The top node of the system directory structure (home directory of the roo...
root mode => n. Syn. with {wizard mode} or `wheel mode'. Like these, it is often generalized to describe privileged states in systems other than OSes.
rot13 => /rot ther'teen/ [USENET from `rotate alphabet 13 places'] n., v. The simple Caesar-cypher encryption that replaces each English letter with the one 13 places forward or back along the alphabet, so that "The butler did it!" becomes "Gur ohgyr...
rotary debugger => [Commodore] n. Essential equipment for those late-night or early-morning debugging sessions. Mainly used as sustenance for the hacker. Comes in many decorator colors, such as Sausage, Pepperoni, and Garbage. See {pizza, ANSI standa...
RSN => // adj. See {Real Soon Now}.
RTFAQ => /R-T-F-A-Q/ [USENET primarily written, by analogy with RTFM] imp. Abbrev. for `Read the FAQ!', an exhortation that the person addressed ought to read the newsgroup's {FAQ list} before posting questions.
RTFM => /R-T-F-M/ [UNIX] imp. Acronym for `Read The Fucking Manual'. 1. Used by gurus to brush off questions they consider trivial or annoying. Compare {Don't do that, then!} 2. Used when reporting a problem to indicate that you aren't just asking ou...
RTI => /R-T-I/ interj. The mnemonic for the `return from interrupt' instruction on many computers including the 6502 and 6800. The variant `RETI' is found among former Z80 hackers (almost nobody programs these things in assembler anymore). Equivalent...
RTM => /R-T-M/ [USENET acronym for `Read The Manual'] 1. Politer variant of RTFM. 2. Robert T. Morris, perpetrator of the great Internet worm of 1988; villain to many, na"ive hacker gone wrong to a few. Morris claimed that the worm that brought the I...
rude => [WPI] adj. 1. (of a program) Badly written. 2. Functionally poor, e.g., a program that is very difficult to use because of gratuitously poor (random?) design decisions. See cuspy.
runes => pl.n. 1. Anything that requires {heavy wizardry} or {black art} to parse core dumps, JCL commands, APL, or code in a language you haven't a clue how to read. Compare {casting the runes}, {Great Runes}. 2. Special display characters (for exam...
runic => adj. Syn. obscure. VMS fans sometimes refer to UNIX as `Runix'; UNIX fans return the compliment by expanding VMS to `Very Messy Syntax' or `Vachement Mauvais Syst`eme' (French; lit. "Cowlike Bad System", idiomatically "Bitchy Bad System").
rusty iron => n. Syn. {tired iron}. It has been claimed that this is the inevitable fate of {water MIPS}.
rusty memory => n. Mass-storage that uses iron-oxide-based magnetic media (esp. tape and the pre-Winchester removable disk packs used in {washing machine}s). Compare donuts.*S/N ratio // n. (also `s/n ratio', `sn ratio'). Syn. {signal-to-noise ratio}...
sacred => adj. Reserved for the exclusive use of something (an extension of the standard meaning). Often means that anyone may look at the sacred object, but clobbering it will screw whatever it is sacred to. The comment "Register 7 is sacred to the ...
saga => [WPI] n. A cuspy but bogus raving story about N random broken people.
sagan => /say'gn/ [from Carl Sagan's TV series "Cosmos"; think "billions and billions"] n. A large quantity of anything. "There's a sagan different ways to tweak EMACS." "The U.S. Government spends sagans on bombs and welfare --- hard to say which is...
SAIL => /sayl/, not /S-A-I-L/ n. 1. Stanford Artificial Intelligence Lab. An important site in the early development of LISP; with the MIT AI Lab, BBN, CMU, and the UNIX community, one of the major wellsprings of technical innovation and hacker-cultu...
salescritter => /sayls'kri`tr/ n. Pejorative hackerism for a computer salesperson. Hackers tell the following joke Q. What's the difference between a used-car dealer and a computer salesman? A. The used-car dealer knows he's lying. This reflects the ...
salsman => /salz'm*n/ v. To flood a mailing list or newsgroup with huge amounts of useless, trivial or redundant information. From the name of a hacker who has frequently done this on some widely distributed mailing lists.
salt mines => n. Dense quarters housing large numbers of programmers working long hours on grungy projects, with some hope of seeing the end of the tunnel in N years. Noted for their absence of sunshine. Compare playpen, sandbox.
salt substrate => [MIT] n. Collective noun used to refer to potato chips, pretzels, saltines, or any other form of snack food designed primarily as a carrier for sodium chloride. From the technical term `chip substrate', used to refer to the silicon ...
salt substrate2 => of integrated circuits are deposited. 
same-day service => n. Ironic term used to describe long response time, particularly with respect to {MS-DOS} system calls (which ought to require only a tiny fraction of a second to execute). Such response time is a major incentive for programmers t...
same-day service2 => well-behaved. See also PC-ism. 
sandbender => [IBM] n. A person involved with silicon lithography and the physical design of chips. Compare ironmonger, {polygon pusher}.
sandbox => n. (or `sandbox, the') Common term for the R&D department at many software and computer companies (where hackers in commercial environments are likely to be found). Half-derisive, but reflects the truth that research is a form of creative ...
sanity check => n. 1. The act of checking a piece of code (or anything else, e.g., a USENET posting) for completely stupid mistakes. Implies that the check is to make sure the author was sane when it was written; e.g., if a piece of scientific softwa...
sanity check2 => was giving unexpected results, one might first look at the nesting of parentheses or the coding of the formula, as a {sanity check}, before looking at the more complex I/O or data structure manipulation routines, much less the algori...
sanity check3 => 2. A run-time test, either validating input or ensuring that the program hasn't screwed up internally (producing an inconsistent value or state). 
Saturday night special => [from police slang for a cheap handgun] n. A program or feature kluged together during off hours, under a deadline, and in response to pressure from a salescritter. Such hacks are dangerously unreliable, but all too often sn...
say => vt. 1. To type to a terminal. "To list a directory verbosely, you have to say `ls -l'." Tends to imply a newline-terminated command (a `sentence'). 2. A computer may also be said to `say' things to you, even if it doesn't have a speech synthes...
science-fiction fandom => n. Another voluntary subculture having a very heavy overlap with hackerdom; most hackers read SF and/or fantasy fiction avidly, and many go to `cons' (SF conventions) or are involved in fandom-connected activities such as th...
science-fiction fandom2 => Some hacker jargon originated in SF fandom; see defenestration, great-wall, cyberpunk, h, {ha ha only serious}, IMHO, mundane, neep-neep, {Real Soon Now}. Additionally, the jargon terms cowboy, cyberspace, de-rezz, {go flat...
science-fiction fandom3 => virus, wetware, wirehead, and worm originated in SF stories. 
scram switch => [from the nuclear power industry] n. An emergency-power-off switch (see {Big Red Switch}), esp. one positioned to be easily hit by evacuating personnel. In general, this is *not* something you frob lightly; these often initiate expens...
scram switch2 => and are installed in a {dinosaur pen} for use in case of electrical fire or in case some luckless {field servoid} should put 120 volts across himself while {Easter egging}. 
scratch => 1. [from `scratchpad'] adj. Describes a data structure or recording medium attached to a machine for testing or temporary-use purposes; one that can be scribbled on without loss. Usually in the combining forms `scratch memory', `scratch re...
scratch monkey => n. As in "Before testing or reconfiguring, always mount a {scratch monkey}", a proverb used to advise caution when dealing with irreplaceable data or devices. Used to refer to any scratch volume hooked to a computer during any risky...
scratch monkey2 => precious resource or data that might otherwise get trashed. This term preserves the memory of Mabel, the Swimming Wonder Monkey, star of a biological research program at the University of Toronto ca. 1986. Mabel was not (so the leg...
scratch monkey3 => university had spent years teaching her how to swim, breathing through a regulator, in order to study the effects of different gas mixtures on her physiology. Mabel suffered an untimely demise one day when DEC PMed the PDP-11 contr...
scratch monkey4 => {provocative maintainance}). It is recorded that, after calming down an understandably irate customer sufficiently to ascertain the facts of the matter, a DEC troubleshooter called up the {field circus} manager responsible and aske...
scratch monkey5 => all the consequences to humans were so amusing; the sysop of the machine in question was nearly thrown in jail at the behest of certain clueless droids at the local `humane' society. The moral is clear When in doubt, always mount a...
screw => [MIT] n. A lose, usually in software. Especially used for user-visible misbehavior caused by a bug or misfeature. This use has become quite widespread outside MIT.
screwage => /skroo'*j/ n. Like lossage but connotes that the failure is due to a designed-in misfeature rather than a simple inadequacy or a mere bug.
scribble => n. To modify a data structure in a random and unintentionally destructive way. "Bletch! Somebody's disk-compactor program went berserk and scribbled on the i-node table." "It was working fine until one of the allocation routines scribbled...
scrog => /skrog/ [Bell Labs] vt. To damage, trash, or corrupt a data structure. "The list header got scrogged." Also reported as `skrog', and ascribed to the comic strip "The Wizard of Id". Equivalent to scribble or mangle.
scrool => /skrool/ [from the pioneering Roundtable chat system in Houston ca. 1984; prob. originated as a typo for `scroll'] n. The log of old messages, available for later perusal or to help one get back in synch with the conversation. It was origin...
scrozzle => /skroz'l/ vt. Used when a self-modifying code segment runs incorrectly and corrupts the running program or vital data. "The damn compiler scrozzled itself again!"
SCSI => [Small Computer System Interface] n. A bus-independent standard for system-level interfacing between a computer and intelligent devices. Typically annotated in literature with `sexy' (/sek'see/), `sissy' (/sis'ee/), and `scuzzy' (/skuh'zee/) ...
search-and-destroy mode => n. Hackerism for the search-and-replace facility in an editor, so called because an incautiously chosen match pattern can cause infinite damage.
second-system effect => n. (sometimes, more euphoniously, `second-system syndrome') When one is designing the successor to a relatively small, elegant, and successful system, there is a tendency to become grandiose in one's success and design an elep...
second-system effect2 => The term was first used by Fred Brooks in his classic `The Mythical Man-Month Essays on Software Engineering' (Addison-Wesley, 1975; ISBN 0-201-00650-2). It described the jump from a set of nice, simple operating systems on t...
second-system effect3 => 360 series. A similar effect can also happen in an evolving system; see {Brooks's Law}, {creeping elegance}, {creeping featurism}. See also {Multics}, OS/2, X, {software bloat}. This version of the jargon lexicon has been des...
second-system effect4 => much truth for comfort) as an example of second-system effect run amok on jargon-1.... 
secondary damage => n. When a fatal error occurs (esp. a segfault) the immediate cause may be that a pointer has been trashed due to a previous {fandango on core}. However, this fandango may have been due to an *earlier* fandango, so no amount of ana...
secondary damage2 => the damage occurred. "The data structure was clobbered, but it was secondary damage." By extension, the corruption resulting from N cascaded fandangoes on core is `Nth-level damage'. There is at least one case on record in which ...
secondary damage3 => actually dug up the underlying bug behind an instance of seventh-level damage! The hacker who accomplished this near-superhuman feat was presented with an award by his fellows. 
security through obscurity => n. A name applied by hackers to most OS vendors' favorite way of coping with security holes --- namely, ignoring them and not documenting them and trusting that nobody will find out about them and that people who do find...
security through obscurity2 => This never works for long and occasionally sets the world up for debacles like the RTM worm of 1988, but once the brief moments of panic created by such events subside most vendors are all too willing to turn over and g...
security through obscurity3 => fixing the bugs would siphon off the resources needed to implement the next user-interface frill on marketing's wish list --- and besides, if they started fixing security bugs customers might begin to *expect* it and im...
security through obscurity4 => merchantability gave them some sort of *right* to a system with fewer holes in it than a shotgunned Swiss cheese, and then where would we be? Historical note It is claimed (with dissent from {ITS} fans who say they used...
security through obscurity5 => in a positive sense) that this term was first used in the USENET newsgroup in comp.sys.apollo during a campaign to get HP/Apollo to fix security problems in its UNIX-clone Aegis/DomainOS. They didn't change a thing. 
SED => [TMRC, from `Light-Emitting Diode'] /S-E-D/ n. Smoke-emitting diode. A friode that lost the war. See LER.
segfault => n.,vi. Syn. segment, seggie.
seggie => /seg'ee/ [UNIX] n. Shorthand for {segmentation fault} reported from Britain.
segment => /seg'ment/ vi. To experience a {segmentation fault}. Confusingly, this is often pronounced more like the noun `segment' than like mainstream v. segment; this is because it is actually a noun shorthand that has been verbed.
segmentation fault => n. [UNIX] 1. An error in which a running program attempts to access memory not allocated to it and {core dump}s with a segmentation violation error. 2. To lose a train of thought or a line of reasoning. Also uttered as an exclam...
segv => /seg'vee/ n.,vi. Yet another synonym for {segmentation fault} (actually, in this case, `segmentation violation').
self-reference => n. See self-reference.
selvage => /sel'v*j/ [from sewing] n. See chad (sense 1).
semi => /se'mee/ or /se'mi/ 1. n. Abbreviation for `semicolon', when speaking. "Commands to grind are prefixed by semi-semi-star" means that the prefix is `;;*', not 1/4 of a star. 2. A prefix used with words such as `immediately' as a qualifier. "Wh...
semi-infinite => n. See infinite.
senior bit => [IBM] n. Syn. {meta bit}.
server => n. A kind of daemon that performs a service for the requester and which often runs on a computer other than the one on which the server runs. A particularly common term on the Internet, which is rife with `name servers', `domain servers', `...
SEX => /seks/ [Sun Users' Group & elsewhere] n. 1. Software EXchange. A technique invented by the blue-green algae hundreds of millions of years ago to speed up their evolution, which had been terribly slow up until then. Today, SEX parties are popul...
sex changer => n. Syn. {gender mender}.
shareware => /sheir'weir/ n. Freeware (sense 1) for which the author requests some payment, usually in the accompanying documentation files or in an announcement made by the software itself. Such payment may or may not buy additional support or funct...
shelfware => /shelfweir/ n. Software purchased on a whim (by an individual user) or in accordance with policy (by a corporation or government agency), but not actually required for any particular use. Therefore, it often ends up on some shelf.

factpacks/jargon.fact  view on Meta::CPAN

the X that can be Y => not the true X is Yet another instance of hackerdoms peculiar attraction to mystical references --- a common humorous way of making exclusive statements about a class of things. The template is from the `Tao te Ching "The Tao w...
the X that can be Y => not the true X2 is true Tao." The implication is often that the X is a mystery accessible only to the enlightened. See the trampoline entry for an example, and compare {has the X nature}. 
theology => n. 1. Ironically or humorously used to refer to {religious issues}. 2. Technical fine points of an abstruse nature, esp. those where the resolution is of theoretical interest but is relatively marginal with respect to actual use of a desi...
theory => n. The consensus, idea, plan, story, or set of rules that is currently being used to inform a behavior. This is a generalization and abuse of the technical meaning. "Whats the theory on fixing this TECO loss?" "Whats the theory on dinner to...
thinko => /thingkoh/ [by analogy with `typo] n. A momentary, correctable glitch in mental processing, especially one involving recall of information learned by rote; a bubble in the stream of consciousness. Syn. braino. Compare mouso.
This time, for sure! => excl. Ritual affirmation frequently uttered during protracted debugging sessions involving numerous small obstacles (e.g., attempts to bring up a UUCP connection). For the proper effect, this must be uttered in a fruity imitat...
This time, for sure!2 => heard "Hey, Rocky! Watch me pull a rabbit out of my hat!" The canonical response is, of course, "But that trick *never* works!" See {{Humor, Hacker}}. 
thrash => vi. To move wildly or violently, without accomplishing anything useful. Paging or swapping systems that are overloaded waste most of their time moving data into and out of core (rather than performing useful computation) and are therefore s...
thread => n. [USENET, GEnie, CompuServe] Common abbreviation of `topic thread, a more or less continuous chain of postings on a single topic.
three-finger salute => n. Syn. {Vulcan nerve pinch}.
thud => n. 1. Yet another meta-syntactic variable (see foo). It is reported that at CMU from the mid-1970s the canonical series of these was `foo, `bar, `thud, `blat. 2. Rare term for the hash character, `# (ASCII 0100011). See ASCII for other synony...
thunk => /thuhnk/ n. 1. "A piece of coding which provides an address", according to P. Z. Ingerman, who invented thunks in 1961 as a way of binding actual parameters to their formal definitions in Algol-60 procedure calls. If a procedure is called wi...
tick => n. 1. A jiffy (sense 1). 2. In simulations, the discrete unit of time that passes between iterations of the simulation mechanism. In AI applications, this amount of time is often left unspecified, since the only constraint of interest is the ...
tick-list features => [Acorn Computers] n. Features in software or hardware that customers insist on but never use (calculators in desktop TSRs and that sort of thing). The American equivalent would be `checklist features, but this jargon sense of th...
tickle a bug => vt. To cause a normally hidden bug to manifest through some known series of inputs or operations. "You can tickle the bug in the Paradise VGA cards highlight handling by trying to set bright yellow reverse video."
tiger team => [U.S. military jargon] n. A team whose purpose is to penetrate security, and thus test security measures. These people are paid professionals who do hacker-type tricks, e.g., leave cardboard signs saying "bomb" in critical defense insta...
tiger team2 => "Your codebooks have been stolen" (they usually havent been) inside safes, etc. After a successful penetration, some high-ranking security type shows up the next morning for a `security review and finds the sign, note, etc., and all he...
tiger team3 => of tiger teams sometimes lead to early retirement for base commanders and security officers (see the patch entry for an example). A subset of tiger teams are professional crackers, testing the security of military computer installation...
tiger team4 => via networks or supposedly `secure comm channels. Some of their escapades, if declassified, would probably rank among the greatest hacks of all times. The term has been adopted in commercial computer-security circles in this more speci...
time sink => [poss. by analogy with `heat sink or `current sink] n. A project that consumes unbounded amounts of time.
time T => /tim T/ n. 1. An unspecified but usually well-understood time, often used in conjunction with a later time T+1. "Well meet on campus at time T or at Louies at time T+1" means, in the context of going out for dinner "We can meet on campus an...
time T2 => Louies itself a bit later." (Louies is a Chinese restaurant in Palo Alto that is a favorite with hackers.) Had the number 30 been used instead of the number 1, it would have implied that the travel time from campus to Louies is 30 minutes;...
time T3 => hasnt been decided on yet), you can meet half an hour later at Louies than you could on campus and end up eating at the same time. See also {since time T equals minus infinity}. 
times-or-divided-by => [by analogy with `plus-or-minus] quant. Term occasionally used when describing the uncertainty associated with a scheduling estimate, for either humorous or brutally honest effect. For a software project, the factor is usually ...
tinycrud => /tinee-kruhd/ n. A pejorative used by habitues of older game-oriented MUD versions for TinyMUDs and other user-extensible MUD variants; esp. common among users of the rather violent and competitive AberMUD and MIST systems. These people j...
tip of the ice-cube => [IBM] n. The visible part of something small and insignificant. Used as an ironic comment in situations where `tip of the iceberg might be appropriate if the subject were actually nontrivial.
tired iron => [IBM] n. Hardware that is perfectly functional but far enough behind the state of the art to have been superseded by new products, presumably with sufficient improvement in bang-per-buck that the old stuff is starting to look a bit like...
tits on a keyboard => n. Small bumps on certain keycaps to keep touch-typists registered (usually on the `5 of a numeric keypad, and on the `F and `J of a QWERTY keyboard).
TLA => /T-L-A/ [Three-Letter Acronym] n. 1. Self-describing acronym for a species with which computing terminology is infested. 2. Any confusing acronym. Examples include MCA, FTP, SNA, CPU, MMU, SCCS, DMU, FPU, NNTP, TLA. People who like this looser...
TMRC => /tmerk/ n. The Tech Model Railroad Club at MIT, one of the wellsprings of hacker culture. The 1959 `Dictionary of the TMRC Language compiled by Peter Samson included several terms which became basics of the hackish vocabulary (see esp. foo an...
to a first approximation => 1. [techspeak] When one is doing certain numerical computations, an approximate solution may be computed by any of several heuristic methods, then refined to a final value. By using the starting point of a first approximat...
to a first approximation2 => algorithm that converges more quickly to the correct result. 2. In jargon, a preface to any comment that indicates that the comment is only approximately true. The remark "To a first approximation, I feel good" might indi...
to a first approximation3 => reveal that not all is perfect (e.g., a nagging cough still remains after an illness). 
to a zeroth approximation => [from `to a first approximation] A *really* sloppy approximation; a wild guess. Compare {social science number}.
toast => 1. n. Any completely inoperable system or component, esp. one that has just crashed and burned "Uh, oh ... I think the serial board is toast." 2. vt. To cause a system to crash accidentally, especially in a manner that requires manual reboot...
toaster => n. 1. The archetypal really stupid application for an embedded microprocessor controller; often used in comments that imply that a scheme is inappropriate technology (but see {elevator controller}). "DWIM for an assembler? Thatd be as sill...
toeprint => n. A footprint of especially small size.
toggle => vt. To change a bit from whatever state it is in to the other state; to change from 1 to 0 or from 0 to 1. This comes from `toggle switches, such as standard light switches, though the word `toggle actually refers to the mechanism that keep...
tool => 1. n. A program used primarily to create, manipulate, modify, or analyze other programs, such as a compiler or an editor or a cross-referencing program. Oppose app, {operating system}. 2. [UNIX] An application program with a simple, `transpar...
toolsmith => n. The software equivalent of a tool-and-die specialist; one who specializes in making the tools with which other programmers create applications. See also uninteresting.
topic drift => n. Term used on GEnie, USENET and other electronic fora to describe the tendency of a thread to drift away from the original subject of discussion (and thus, from the Subject header of the originating message), or the results of that t...
topic drift2 => reminders that the discussion has strayed off any useful track. "I think we started with a question about Nivens last book, but weve ended up discussing the sexual habits of the common marmoset. Now *thats* topic drift!" 
topic group => n. Syn. forum.
TOPS-10 => /tops-ten/ n. DECs proprietary OS for the fabled PDP-10 machines, long a favorite of hackers but now effectively extinct. A fountain of hacker folklore; see appendix A. See also {ITS}, {TOPS-20}, {TWENEX}, VMS, {operating system}. TOPS-10 ...
TOPS-20 => /tops-twentee/ n. See {TWENEX}.
toto => /tohtoh/ n. This is reported to be the default scratch file name among French-speaking programmers --- in other words, a francophone foo.
tourist => [ITS] n. A guest on the system, especially one who generally logs in over a network from a remote location for {comm mode}, email, games, and other trivial purposes. One step below luser. Hackers often spell this turist, perhaps by some so...
tourist information => n. Information in an on-line display that is not immediately useful, but contributes to a viewers gestalt of whats going on with the software or hardware behind it. Whether a given piece of info falls in this category depends p...
tourist information2 => for at any given time. The `bytes free information at the bottom of an MS-DOS `dir display is tourist information; so (most of the time) is the TIME information in a UNIX `ps(1) display. 
touristic => adj. Having the quality of a tourist. Often used as a pejorative, as in `losing touristic scum. Often spelled `turistic or `turistik, so that phrase might be more properly rendered `lusing turistic scum.
toy => n. A computer system; always used with qualifiers. 1. `nice toy One that supports the speakers hacking style adequately. 2. `just a toy A machine that yields insufficient computrons for the speakers preferred uses. This is not condemnatory, as...
toy language => n. A language useful for instructional purposes or as a proof-of-concept for some aspect of computer-science theory, but inadequate for general-purpose programming. {Bad Thing}s can result when a toy language is promoted as a general ...
toy language2 => (see {bondage-and-discipline language}); the classic example is {Pascal}. Several moderately well-known formalisms for conceptual tasks such as programming Turing machines also qualify as toy languages in a less negative sense. See a...
toy problem => [AI] n. A deliberately oversimplified case of a challenging problem used to investigate, prototype, or test algorithms for a real problem. Sometimes used pejoratively. See also gedanken, {toy program}.
toy program => n. 1. One that can be readily comprehended; hence, a trivial program (compare noddy). 2. One for which the effort of initial coding dominates the costs through its life cycle. See also noddy.
trampoline => n. An incredibly hairy technique, found in some HLL and program-overlay implementations (e.g., on the Macintosh), that involves on-the-fly generation of small executable (and, likely as not, self-modifying) code objects to do indirectio...
trap => 1. n. A program interrupt, usually an interrupt caused by some exceptional situation in the user program. In most cases, the OS performs some action, then returns control to the program. 2. vi. To cause a trap. "These instructions trap to the...
trap door => alt. `trapdoor n. 1. Syn. {back door}. 2. [techspeak] A `trap-door function is one which is easy to compute but very difficult to compute the inverse of. Such functions have important applications in cryptography, specifically in the con...
trash => vt. To destroy the contents of (said of a data structure). The most common of the family of near-synonyms including mung, mangle, and scribble.
tree-killer => [Sun] n. 1. A printer. 2. A person who wastes paper. This should be interpreted in a broad sense; `wasting paper includes the production of spiffy but content-free documents. Thus, most suits are tree-killers.
trit => /trit/ [by analogy with `bit] n. One base-3 digit; the amount of information conveyed by a selection among one of three equally likely outcomes (see also bit). These arise, for example, in the context of a flag that should actually be able to...
trivial => adj. 1. Too simple to bother detailing. 2. Not worth the speakers time. 3. Complex, but solvable by methods so well known that anyone not utterly cretinous would have thought of them already. 4. Any problem one has already solved (some cla...
troglodyte => [Commodore] n. 1. A hacker who never leaves his cubicle. The term `Gnoll (from Dungeons & Dragons) is also reported. 2. A curmudgeon attached to an obsolescent computing environment. The combination `ITS troglodyte was flung around some...
troglodyte mode => [Rice University] n. Programming with the lights turned off, sunglasses on, and the terminal inverted (black on white) because youve been up for so many days straight that your eyes hurt (see {raster burn}). Loud music blaring from...
troglodyte mode2 => optional but recommended. See {larval stage}, {hack mode}. 
Trojan horse => [coined by MIT-hacker-turned-NSA-spook Dan Edwards] n. A program designed to break security or damage a system that is disguised as something else benign, such as a directory lister, archiver, a game, or (in one notorious 1990 case on...
Trojan horse2 => destroy viruses! See {back door}, virus, worm. 
true-hacker => [analogy with `trufan from SF fandom] n. One who exemplifies the primary values of hacker culture, esp. competence and helpfulness to other hackers. A high compliment. "He spent 6 hours helping me bring up UUCP and netnews on my FOOBAR...
tty => /T-T-Y/ [UNIX], /titee/ [ITS, but some UNIX people say it this way as well; this pronunciation is not considered to have sexual undertones] n. 1. A terminal of the teletype variety, characterized by a noisy mechanical printer, a very limited c...
tube => 1. n. A CRT terminal. Never used in the mainstream sense of TV; real hackers dont watch TV, except for Loony Toons, Rocky & Bullwinkle, Trek Classic, the Simpsons, and the occasional cheesy old swashbuckler movie (see appendix B). 2. [IBM] To...
tube time => n. Time spent at a terminal or console. More inclusive than hacking time; commonly used in discussions of what parts of ones environment one uses most heavily. "I find Im spending too much of my tube time reading mail since I started thi...
tunafish => n. In hackish lore, refers to the mutated punchline of an age-old joke to be found at the bottom of the manual pages of `tunefs(8) in the original BSD 4.2 distribution. The joke was removed in later releases once commercial sites started ...
tune => [from automotive or musical usage] vt. To optimize a program or system for a particular environment, esp. by adjusting numerical parameters designed as hooks for tuning, e.g., by changing `#define lines in C. One may `tune for time (fastest e...
turbo nerd => n. See {computer geek}.
turist => /toorist/ n. Var. sp. of tourist, q.v. Also in adjectival form, `turistic. Poss. influenced by luser and `Turing.
tweak => vt. 1. To change slightly, usually in reference to a value. Also used synonymously with twiddle. If a program is almost correct, rather than figure out the precise problem you might just keep tweaking it until it works. See frobnicate and {f...
TWENEX => /tweneks/ n. The TOPS-20 operating system by DEC --- the second proprietary OS for the PDP-10 --- preferred by most PDP-10 hackers over TOPS-10 (that is, by those who were not {ITS} or {WAITS} partisans). TOPS-20 began in 1969 as Bolt, Bera...
twiddle => n. 1. Tilde (ASCII 1111110, `~). Also called `squiggle, `sqiggle (sic --- pronounced /skigl/), and `twaddle, but twiddle is the most common term. 2. A small and insignificant change to a program. Usually fixes one bug and generates several...
twink => /twink/ [UCSC] n. Equivalent to {read-only user}. Also reported on the USENET group soc.motss; may derive from gay slang for a cute young thing with nothing upstairs.
two pi => quant. The number of years it takes to finish ones thesis. Occurs in stories in the following form "He started on his thesis; 2 pi years later..."
two-to-the-N => quant. An amount much larger than N but smaller than infinity. "I have 2-to-the-N things to do before I can go out for lunch" means you probably wont show up.
twonkie => /twonkee/ n. The software equivalent of a Twinkie (a variety of sugar-loaded junk food, or (in gay slang) the male equivalent of `chick); a useless `feature added to look sexy and placate a marketroid (compare {Saturday-night special}). Th...
UN*X => n. Used to refer to the UNIX operating system (a trademark of AT&T) in writing, but avoiding the need for the ugly (TM) typography. Also used to refer to any or all varieties of Unixoid operating systems. Ironically, lawyers now say (1990) th...
undefined external reference => excl. [UNIX] A message from UNIX's linker. Used in speech to flag loose ends or dangling references in an argument or discussion.
under the hood => prep. [hot-rodder talk] 1. Used to introduce the underlying implementation of a product (hardware, software, or idea). Implies that the implementation is not intuitively obvious from the appearance, but the speaker is about to enabl...
under the hood2 => now look under the hood to see how ...." 2. Can also imply that the implementation is much simpler than the appearance would indicate "Under the hood, we are just fork/execing the shell." 3. Inside a chassis, as in "Under the hood,...
undocumented feature => n. See feature.
uninteresting => adj. 1. Said of a problem that, although nontrivial, can be solved simply by throwing sufficient resources at it. 2. Also said of problems for which a solution would neither advance the state of the art nor be fun to design and code....
UNIX => /yoo'niks/ [In the authors' words, "A weak pun on Multics"] n. (also `Unix') An interactive time-sharing system originally invented in 1969 by Ken Thompson after Bell Labs left the Multics project, originally so he could play games on his sca...
UNIX brain damage => n. Something that has to be done to break a network program (typically a mailer) on a non-UNIX system so that it will interoperate with UNIX systems. The hack may qualify as `UNIX brain damage' if the program conforms to publishe...
UNIX brain damage2 => question does not. UNIX brain damage happens because it is much easier for other (minority) systems to change their ways to match non-conforming behavior than it is to change all the hundreds of thousands of UNIX systems out the...
UNIX brain damage3 => is a kluge in a mail server to recognize bare line feed (the UNIX newline) as an equivalent form to the Internet standard newline, which is a carriage return followed by a line feed. Such things can make even a hardened jock wee...
UNIX conspiracy => [ITS] n. According to a conspiracy theory long popular among {ITS} and {TOPS-20} fans, UNIX's growth is the result of a plot, hatched during the 1970s at Bell Labs, whose intent was to hobble AT&T's competitors by making them depen...
UNIX conspiracy2 => evolution was to be under AT&T's control. This would be accomplished by disseminating an operating system that is apparently inexpensive and easily portable, but also relatively unreliable and insecure (so as to require continuing...
UNIX conspiracy3 => was lent a substantial impetus in 1984 by the paper referenced in the {back door} entry. In this view, UNIX was designed to be one of the first computer viruses (see virus) --- but a virus spread to computers indirectly by people ...
UNIX conspiracy4 => directly through disks and networks. Adherents of this `UNIX virus' theory like to cite the fact that the well-known quotation "UNIX is snake oil" was uttered by DEC president Kenneth Olsen shortly before DEC began actively promot...
UNIX conspiracy5 => workstations. (Olsen now claims to have been misquoted.) 
UNIX weenie => [ITS] n. 1. A derogatory play on `UNIX wizard', common among hackers who use UNIX by necessity but would prefer alternatives. The implication is that although the person in question may consider mastery of UNIX arcana to be a wizardly ...
UNIX weenie2 => is the ability to tolerate (and the bad taste to wallow in) the incoherence and needless complexity that is alleged to infest many UNIX programs. "This shell script tries to parse its arguments in 69 bletcherous ways. It must have bee...
UNIX weenie3 => 2. A derogatory term for anyone who engages in uncritical praise of UNIX. Often appearing in the context "stupid UNIX weenie". See Weenix, {UNIX conspiracy}. See also weenie. 
unixism => n. A piece of code or a coding technique that depends on the protected multi-tasking environment with relatively low process-spawn overhead that exists on virtual-memory UNIX systems. Common unixisms include gratuitous use of `fork(2)'; th...
unswizzle => v. See swizzle.
unwind the stack => vi. 1. [techspeak] During the execution of a procedural language, one is said to `unwind the stack' from a called procedure up to a caller when one discards the stack frame and any number of frames above it, popping back up to the...
unwind the stack2 => this is done with `longjmp'/`setjmp', in LISP with `throw/catch'. See also {smash the stack}. 2. People can unwind the stack as well, by quickly dealing with a bunch of problems "Oh heck, let's do lunch. Just a second while I unw...
unwind-protect => [MIT from the name of a LISP operator] n. A task you must remember to perform before you leave a place or finish a project. "I have an unwind-protect to call my advisor."
up => adj. 1. Working, in order. "The down escalator is up." Oppose down. 2. `bring up' vt. To create a working version and start it. "They brought up a down system." 3. `come up' vi. To become ready for production use.
upload => /uhp'lohd/ v. 1. [techspeak] To transfer programs or data over a digital communications link from a smaller or peripheral `client' system to a larger or central `host' one. A transfer in the other direction is, of course, called a download ...
upthread => adv. Earlier in the discussion (see thread), i.e., `above'. "As Joe pointed out upthread, ..." See also followup.
urchin => n. See munchkin.
USENET => /yoos'net/ or /yooz'net/ [from `Users' Network'] n. A distributed bboard (bulletin board) system supported mainly by UNIX machines. Originally implemented in 1979-1980 by Steve Bellovin, Jim Ellis, Tom Truscott, and Steve Daniel at Duke Uni...
user => n. 1. Someone doing `real work' with the computer, using it as a means rather than an end. Someone who pays to use a computer. See {real user}. 2. A programmer who will believe anything you tell him. One who asks silly questions. [GLS observe...
user-friendly => adj. Programmer-hostile. Generally used by hackers in a critical tone, to describe systems that hold the user's hand so obsessively that they make it painful for the more experienced and knowledgeable to get any work done. See menuit...
user-obsequious => adj. Emphatic form of user-friendly. Connotes a system so verbose, inflexible, and determinedly simple-minded that it is nearly unusable. "Design a system any fool can use and only a fool will want to use it." See {WIMP environment...
USG UNIX => /U-S-G yoo'niks/ n. Refers to AT&T UNIX commercial versions after {Version 7}, especially System III and System V releases 1, 2, and 3. So called because during most of the life-span of those versions AT&T's support crew was called the `U...
UTSL => // [UNIX] n. On-line acronym for `Use the Source, Luke' (a pun on Obi-Wan Kenobi's "Use the Force, Luke!" in `Star Wars') --- analogous to RTFM but more polite. This is a common way of suggesting that someone would be best off reading the sou...
UUCPNET => n. The store-and-forward network consisting of all the world's connected UNIX machines (and others running some clone of the UUCP (UNIX-to-UNIX CoPy) software). Any machine reachable only via a {bang path} is on UUCPNET. See {network addre...
vanilla => [from the default flavor of ice cream in the U.S.] adj. Ordinary flavor, standard. When used of food, very often does not mean that the food is flavored with vanilla extract! For example, `vanilla wonton soup' means ordinary wonton soup, a...
vannevar => /van'*-var/ n. A bogus technological prediction or a foredoomed engineering concept, esp. one that fails by implicitly assuming that technologies develop linearly, incrementally, and in isolation from one another when in fact the learning...
vaporware => /vay'pr-weir/ n. Products announced far in advance of any release (which may or may not actually take place).
var => /veir/ or /var/ n. Short for `variable'. Compare arg, param.
VAX => /vaks/ n. 1. [from Virtual Address eXtension] The most successful minicomputer design in industry history, possibly excepting its immediate ancestor, the PDP-11. Between its release in 1978 and its eclipse by {killer micro}s after about 1986, ...