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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...
factpacks/jargon.fact view on Meta::CPAN
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...
coefficient of X2 => there are subtle distinctions among them that convey information about the way the speaker mentally models whatever he or she is describing. `Foo factor' and `foo quotient' tend to describe something for which the issue is one of...
coefficient of X3 => example is {fudge factor}. It's not important how much you're fudging; the term simply acknowledges that some fudging is needed. You might talk of liking a movie for its silliness factor. Quotient tends to imply that the property...
coefficient of X4 => "I would have won except for my luck quotient." This could also be "I would have won except for the luck factor", but using *quotient* emphasizes that it was bad luck overpowering good luck (or someone else's good luck overpoweri...
coefficient of X5 => `coefficient of foo' both tend to imply that foo is, if not strictly measurable, at least something that can be larger or smaller. Thus, you might refer to a paper or person as having a `high bogosity index', whereas you would be...
coefficient of X6 => bogosity factor'. `Foo index' suggests that foo is a condensation of many quantities, as in the mundane cost-of-living index; `coefficient of foo' suggests that foo is a fundamental quantity, as in a coefficient of friction. The ...
coefficient of X7 => one of personal preference; e.g., some people might feel that bogosity is a fundamental attribute and thus say `coefficient of bogosity', whereas others might feel it is a combination of factors and thus say `bogosity index'.
cokebottle => /kohk'bot-l/ n. Any very unusual character, particularly one you can't type because it it isn't on your keyboard. MIT people used to complain about the `control-meta-cokebottle' commands at SAIL, and SAIL people complained right back ab...
cold boot => n. See boot.
COME FROM => n. A semi-mythical language construct dual to the `go to'; `COME FROM' <label> would cause the referenced label to act as a sort of trapdoor, so that if the program ever reached it control would quietly and automagically be transferred t...
COME FROM2 => FROM'. `COME FROM' was first proposed in a Datamation article of December 1973 (reprinted in the April 1984 issue of `Communications of the ACM') that parodied the then-raging `structured programming' {holy wars} (see {considered harmfu...
COME FROM3 => the `assigned COME FROM' and the `computed COME FROM' (parodying some nasty control constructs in FORTRAN and some extended BASICs). Of course, multi-tasking (or non-determinism) could be implemented by having more than one `COME FROM' ...
COME FROM4 => label. In some ways the FORTRAN `DO' looks like a `COME FROM' statement. After the terminating statement number/`CONTINUE' is reached, control continues at the statement following the DO. Some generous FORTRANs would allow arbitrary sta...
COME FROM5 => the statement, leading to examples like DO 10 I=1,LIMIT C imagine many lines of code here, leaving the C original DO statement lost in the spaghetti... WRITE(6,10) I,FROB(I) 10 FORMAT(1X,I5,G10.4) in which the trapdoor is just after the...
COME FROM6 => statement labeled 10. (This is particularly surprising because the label doesn't appear to have anything to do with the flow of control at all!) While sufficiently astonishing to the unsuspecting reader, this form of `COME FROM' stateme...
COME FROM7 => all, control will eventually pass to the following statement. The implementation of the general form was left to Univac FORTRAN, ca. 1975. The statement `AT 100' would perform a `COME FROM 100'. It was intended strictly as a debugging a...
COME FROM8 => promised to anyone so deranged as to use it in production code. More horrible things had already been perpetrated in production languages, however; doubters need only contemplate the `ALTER' verb in COBOL. `COME FROM' was supported unde...
COME FROM9 => 15 years later, in C-INTERCAL (see INTERCAL, retrocomputing); knowledgeable observers are still reeling from the shock.
comm mode => /kom mohd/ [ITS from the feature supporting on-line chat; the term may spelled with one or two m's] Syn. for {talk mode}.
command key => [Mac users] n. The Macintosh key with the cloverleaf graphic on its keytop; sometimes referred to as `flower', `pretzel', `clover', `propeller', `beanie' (an apparent reference to the major feature of a propeller beanie), or splat. The...
command key2 => The proliferation of terms for this creature may illustrate one subtle peril of iconic interfaces.
comment out => vt. To surround a section of code with comment delimiters or to prefix every line in the section with a comment marker; this prevents it from being compiled or interpreted. Often done when the code is redundant or obsolete, but you wan...
comment out2 => the intent of the active code clearer; also when the code in that section is broken and you want to bypass it in order to debug some other part of the code. Compare {condition out}, usually the preferred technique in languages (such a...
Commonwealth Hackish => n. Hacker jargon as spoken outside the U.S., esp. in the British Commonwealth. It is reported that Commonwealth speakers are more likely to pronounce truncations like `char' and `soc', etc., as spelled (/char/, /sok/), as oppo...
Commonwealth Hackish2 => Dots in newsgroup names tend to be pronounced more often (so soc.wibble is /sok dot wib'l/ rather than /sohsh wib'l/). The prefix meta may be pronounced /mee't*/; similarly, Greek letter beta is often /bee't*/, zeta is often ...
Commonwealth Hackish3 => Preferred metasyntactic variables include `eek', `ook', `frodo', and `bilbo'; `wibble', `wobble', and in emergencies `wubble'; `banana', `wombat', `frog', fish, and so on and on (see foo, sense 4). Alternatives to verb doubli...
Commonwealth Hackish4 => `frenzy' (as in feeding frenzy), and `city' (examples "barf city!" "hack-o-rama!" "core dump frenzy!"). Finally, note that the American terms `parens', `brackets', and `braces' for (), [], and {} are uncommon; Commonwealth ha...
Commonwealth Hackish5 => brackets', and `curly brackets'. Also, the use of `pling' for bang is common outside the United States. See also attoparsec, calculator, chemist, {console jockey}, fish, {go-faster stripes}, grunge, hakspek, {heavy metal}, {l...
Commonwealth Hackish6 => fixer}, noddy, psychedelicware, plingnet, {raster blaster}, seggie, {terminal junkie}, {tick-list features}, weeble, weasel, YABA, and notes or definitions under {Bad Thing}, barf, bogus, bum, {chase pointers}, {cosmic rays},...
Commonwealth Hackish7 => crunch, dodgy, gonk, hamster, hardwarily, mess-dos, nybble, proglet, root, SEX, tweak, and xyzzy.
compact => adj. Of a design, describes the valuable property that it can all be apprehended at once in one's head. This generally means the thing created from the design can be used with greater facility and fewer errors than an equivalent tool that ...
compiler jock => n. See jock (sense 2).
compress => [UNIX] vt. When used without a qualifier, generally refers to crunching of a file using a particular C implementation of Lempel-Ziv compression by James A. Woods et al. and widely circulated via USENET. Use of crunch itself in this sense ...
Compu$erve => n. See CI$.
computer confetti => n. Syn. chad. Though this term is common, this use of the punched-card chad is not a good idea, as the pieces are stiff and have sharp corners that could injure the eyes. GLS reports that he once attended a wedding at MIT during ...
computer confetti2 => enthusiastically threw chad instead of rice. The groom later grumbled that he and his bride had spent most of the evening trying to get the stuff out of their hair.
computer geek => n. One who eats (computer) bugs for a living. One who fulfills all the dreariest negative stereotypes about hackers an asocial, malodorous, pasty-faced monomaniac with all the personality of a cheese grater. Cannot be used by outside...
computer geek2 => hackers; compare black-on-black usage of `nigger'. A computer geek may be either a fundamentally clueless individual or a proto-hacker in {larval stage}. Also called `turbo nerd', `turbo geek'. See also clustergeeking, {geek out}, w...
computron => /kom'pyoo-tron`/ n. 1. A notional unit of computing power combining instruction speed and storage capacity, dimensioned roughly in instructions-per-second times megabytes-of-main-store times megabytes-of-mass-storage. "That machine can't...
condition out => vt. To prevent a section of code from being compiled by surrounding it with a conditional-compilation directive whose condition is always false. The canonical examples are `#if 0' (or `#ifdef notdef', though some find this bletcherou...
condom => n. 1. The protective plastic bag that accompanies 3.5-inch microfloppy diskettes. Rarely, also used of (paper) disk envelopes. Unlike the write protect tab, the condom (when left on) not only impedes the practice of SEX but has also been sh...
connector conspiracy => [probably came into prominence with the appearance of the KL-10 (one model of the PDP-10), none of whose connectors matched anything else] n. The tendency of manufacturers (or, by extension, programmers or purveyors of anythin...
connector conspiracy2 => that don't fit together with the old stuff, thereby making you buy either all new stuff or expensive interface devices. The KL-10 Massbus connector was actually *patented* by DEC, which reputedly refused to license the design...
connector conspiracy3 => parties out of competition for the lucrative Massbus peripherals market. This is a source of never-ending frustration for the diehards who maintain older PDP-10 or VAX systems. Their CPUs work fine, but they are stuck with dy...
connector conspiracy4 => drives with low capacity and high power requirements. In these latter days of open-systems computing this term has fallen somewhat into disuse, to be replaced by the observation that "Standards are great! There are so *many* ...
cons => /konz/ or /kons/ [from LISP] 1. vt. To add a new element to a specified list, esp. at the top. "OK, cons picking a replacement for the console TTY onto the agenda." 2. `cons up' vt. To synthesize from smaller pieces "to cons up an example". I...
considered harmful => adj. Edsger W. Dijkstra's note in the March 1968 `Communications of the ACM', "Goto Statement Considered Harmful", fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony su...
considered harmful2 => policy) no longer print an article taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies have borne titles of the form "X considered Y". The structu...
considered harmful3 => over with the realization that both sides were wrong, but use of such titles has remained as a persistent minor in-joke (the `considered silly' found at various places in this lexicon is related).
console => n. 1. The operator's station of a mainframe. In times past, this was a privileged location that conveyed godlike powers to anyone with fingers on its keys. Under UNIX and other modern timesharing OSes, such privileges are guarded by passwo...
console jockey => n. See {terminal junkie}.
content-free => [by analogy with techspeak `context-free'] adj. Used of a message that adds nothing to the recipient's knowledge. Though this adjective is sometimes applied to flamage, it more usually connotes derision for communication styles that e...
control-C => vi. 1. "Stop whatever you are doing." From the interrupt character used on many operating systems to abort a running program. Considered silly. 2. interj. Among BSD UNIX hackers, the canonical humorous response to "Give me a break!"
control-O => vi. "Stop talking." From the character used on some operating systems to abort output but allow the program to keep on running. Generally means that you are not interested in hearing anything more from that person, at least on that topic...
control-Q => vi. "Resume." From the ASCII XON character used to undo a previous control-S (in fact it is also pronounced XON /X-on/).
control-S => vi. "Stop talking for a second." From the ASCII XOFF character (this is also pronounced XOFF /X-of/). Control-S differs from control-O in that the person is asked to stop talking (perhaps because you are on the phone) but will be allowed...
Conway's Law => prov. The rule that the organization of the software and the organization of the software team will be congruent; originally stated as "If you have four groups working on a compiler, you'll get a 4-pass compiler". This was originally ...
Conway's Law2 => early proto-hacker who wrote an assembler for the Burroughs 220 called SAVE. The name `SAVE' didn't stand for anything; it was just that you lost fewer card decks and listings because they all had SAVE written on them.
cookbook => [from amateur electronics and radio] n. A book of small code segments that the reader can use to do various magic things in programs. One current example is the `PostScript Language Tutorial and Cookbook' by Adobe Systems, Inc (Addison-We...
cookie => n. A handle, transaction ID, or other token of agreement between cooperating programs. "I give him a packet, he gives me back a cookie." The claim check you get from a dry-cleaning shop is a perfect mundane example of a cookie; the only thi...
cookie bear => n. Syn. {cookie monster}.
cookie file => n. A collection of {fortune cookie}s in a format that facilitates retrieval by a fortune program. There are several different ones in public distribution, and site admins often assemble their own from various sources including this lex...
cookie monster => [from "Sesame Street"] n. Any of a family of early (1970s) hacks reported on {TOPS-10}, {ITS}, {Multics}, and elsewhere that would lock up either the victim's terminal (on a time-sharing machine) or the {console} (on a batch mainfra...
cookie monster2 => "I WANT A COOKIE". The required responses ranged in complexity from "COOKIE" through "HAVE A COOKIE" and upward. See also wabbit.
copper => n. Conventional electron-carrying network cable with a core conductor of copper --- or aluminum! Opposed to {light pipe} or, say, a short-range microwave link.
copy protection => n. A class of clever methods for preventing incompetent pirates from stealing software and legitimate customers from using it. Considered silly.
copybroke => /ko'pee-brohk/ adj. [play on `copyright'] Used to describe an instance of a copy-protected program that has been `broken'; that is, a copy with the copy-protection scheme disabled. Syn. copywronged.
copyleft => /kop'ee-left/ [play on `copyright'] n. 1. The copyright notice (`General Public License') carried by GNU EMACS and other Free Software Foundation software, granting reuse and reproduction rights to all comers (but see also {General Public...
copywronged => /ko'pee-rongd/ [play on `copyright'] adj. Syn. for copybroke.
core => n. Main storage or RAM. Dates from the days of ferrite-core memory; now archaic as techspeak most places outside IBM, but also still used in the UNIX community and by old-time hackers or those who would sound like them. Some derived idioms ar...
core dump => n. [common {Iron Age} jargon, preserved by UNIX] 1. [techspeak] A copy of the contents of core, produced when a process is aborted by certain kinds of internal error. 2. By extension, used for humans passing out, vomiting, or registering...
core dump2 => All over the floor. What a mess." "He heard about X and dumped core." 3. Occasionally used for a human rambling on pointlessly at great length; esp. in apology "Sorry, I dumped core on you". 4. A recapitulation of knowledge (compare bit...
core dump3 => one knows about a topic, esp. in a lecture or answer to an exam question. "Short, concise answers are better than core dumps" (from the instructions to an exam at Columbia; syn. {brain dump}). See core.
factpacks/jargon.fact view on Meta::CPAN
filter => [orig. {UNIX}, now also in {MS-DOS}] n. A program that processes an input data stream into an output data stream in some well-defined way, and does no I/O to anywhere else except possibly on error conditions; one designed to be used as a st...
Finagle's Law => n. The generalized or `folk' version of {Murphy's Law}, fully named "Finagle's Law of Dynamic Negatives" and usually rendered "Anything that can go wrong, will". One variant favored among hackers is "The perversity of the Universe te...
Finagle's Law2 => {Hanlon's Razor}). The label `Finagle's Law' was popularized by SF author Larry Niven in several stories depicting a frontier culture of asteroid miners; this `Belter' culture professed a religion and/or running joke involving the w...
Finagle's Law3 => his mad prophet Murphy.
fine => [WPI] adj. Good, but not good enough to be cuspy. The word `fine' is used elsewhere, of course, but without the implicit comparison to the higher level implied by cuspy.
finger => [WAITS, via BSD UNIX] 1. n. A program that displays a particular user or all users logged on the system or a remote system. Typically shows full name, last login time, idle time, terminal line, and terminal location (where applicable). May ...
finger-pointing syndrome => n. All-too-frequent result of bugs, esp. in new or experimental configurations. The hardware vendor points a finger at the software. The software vendor points a finger at the hardware. All the poor users get is the finger...
firebottle => n. A large, primitive, power-hungry active electrical device, similar in function to a FET but constructed out of glass, metal, and vacuum. Characterized by high cost, low density, low reliability, high-temperature operation, and high p...
firefighting => n. 1. What sysadmins have to do to correct sudden operational problems. An opposite of hacking. "Been hacking your new newsreader?" "No, a power glitch hosed the network and I spent the whole afternoon fighting fires." 2. The act of t...
firewall code => n. The code you put in a system (say, a telephone switch) to make sure that the users can't do any damage. Since users always want to be able to do everything but never want to suffer for any mistakes, the construction of a firewall ...
firewall code2 => coding but also of interface presentation, so that users don't even get curious about those corners of a system where they can burn themselves.
firewall machine => n. A dedicated gateway machine with special security precautions on it, used to service outside network connections and dial-in lines. The idea is to protect a cluster of more loosely administered machines hidden behind it from cr...
firewall machine2 => an inexpensive micro-based UNIX box kept clean of critical data, with a bunch of modems and public network ports on it but just one carefully watched connection back to the rest of the cluster. The special precautions may include...
firewall machine3 => even a complete {iron box} keyable to particular incoming IDs or activity patterns. Syn. flytrap, {Venus flytrap}.
fireworks mode => n. The mode a machine is sometimes said to be in when it is performing a {crash and burn} operation.
firmy => /fer'mee/ Syn. stiffy (a 3.5-inch floppy disk).
fish => [Adelaide University, Australia] n. 1. Another metasyntactic variable. See foo. Derived originally from the Monty Python skit in the middle of "The Meaning of Life" entitled "Find the Fish". 2. A pun for `microfiche'. A microfiche file cabine...
FISH queue => [acronym, by analogy with FIFO (First In, First Out)] n. `First In, Still Here'. A joking way of pointing out that processing of a particular sequence of events or requests has stopped dead. Also `FISH mode' and `FISHnet'; the latter ma...
FISH queue2 => running really slowly or exhibiting extreme flakiness.
fix => n.,v. What one does when a problem has been reported too many times to be ignored.
flag => n. A variable or quantity that can take on one of two values; a bit, particularly one that is used to indicate one of two outcomes or is used to control which of two things is to be done. "This flag controls whether to clear the screen before...
flag day => n. A software change that is neither forward- nor backward-compatible, and which is costly to make and costly to reverse. "Can we install that without causing a flag day for all users?" This term has nothing to do with the use of the word...
flag day2 => two values. It came into use when a massive change was made to the {Multics} timesharing system to convert from the old ASCII code to the new one; this was scheduled for Flag Day (a U.S. holiday), June 14, 1966. See also {backward combat...
flaky => adj. (var sp. `flakey') Subject to frequent lossage. This use is of course related to the common slang use of the word to describe a person as eccentric, crazy, or just unreliable. A system that is flaky is working, sort of --- enough that y...
flamage => /flay'm*j/ n. Flaming verbiage, esp. high-noise, low-signal postings to USENET or other electronic fora. Often in the phrase `the usual flamage'. `Flaming' is the act itself; `flamage' the content; a `flame' is a single flaming message. Se...
flame => 1. vi. To post an email message intended to insult and provoke. 2. vi. To speak incessantly and/or rabidly on some relatively uninteresting subject or with a patently ridiculous attitude. 3. vt. Either of senses 1 or 2, directed with hostili...
flame bait => n. A posting intended to trigger a {flame war}, or one that invites flames in reply.
flame on => vi.,interj. 1. To begin to flame. The punning reference to Marvel Comics's Human Torch is no longer widely recognized. 2. To continue to flame. See rave, burble.
flame war => n. (var. `flamewar') An acrimonious dispute, especially when conducted on a public electronic forum such as USENET.
flamer => n. One who habitually flames. Said esp. of obnoxious USENET personalities.
flap => vt. 1. To unload a DECtape (so it goes flap, flap, flap...). Old-time hackers at MIT tell of the days when the disk was device 0 and microtapes were 1, 2,... and attempting to flap device 0 would instead start a motor banging inside a cabinet...
flarp => /flarp/ [Rutgers University] n. Yet another metasyntactic variable (see foo). Among those who use it, it is associated with a legend that any program not containing the word `flarp' somewhere will not work. The legend is discreetly silent on...
flat => adj. 1. Lacking any complex internal structure. "That {bitty box} has only a flat filesystem, not a hierarchical one." The verb form is flatten. 2. Said of a memory architecture (like that of the VAX or 680x0) that is one big linear address s...
flat-ASCII => adj. Said of a text file that contains only 7-bit ASCII characters and uses only ASCII-standard control characters (that is, has no embedded codes specific to a particular text formatter or markup language, and no meta-characters). Syn....
flat-file => adj. A flattened representation of some database or tree or network structure as a single file from which the structure could implicitly be rebuilt, esp. one in flat-ASCII form.
flatten => vt. To remove structural information, esp. to filter something with an implicit tree structure into a simple sequence of leaves; also tends to imply mapping to flat-ASCII. "This code flattens an expression with parentheses into an equivale...
flavor => n. 1. Variety, type, kind. "DDT commands come in two flavors." "These lights come in two flavors, big red ones and small green ones." See vanilla. 2. The attribute that causes something to be flavorful. Usually used in the phrase "yields ad...
flavorful => adj. Full of flavor; esthetically pleasing. See random and losing for antonyms. See also the entries for taste and elegant.
flippy => /flip'ee/ n. A single-sided floppy disk altered for double-sided use by addition of a second write-notch, so called because it must be flipped over for the second side to be accessible. No longer common.
flowchart => [techspeak] n. An archaic form of visual control-flow specification employing arrows and `speech balloons' of various shapes. Hackers never use flowcharts, consider them extremely silly, and associate them with COBOL programmers, {card w...
flower key => [Mac users] n. See {command key}.
flush => v. 1. To delete something, usually superfluous, or to abort an operation. "All that nonsense has been flushed." 2. [UNIX/C] To force buffered I/O to disk, as with an `fflush(3)' call. This is *not* an abort or deletion as in sense 1, but a d...
Flyspeck 3 => n. Standard name for any font that is so tiny as to be unreadable (by analogy with such names as `Helvetica 10' for 10-point Helvetica). Legal boilerplate is usually printed in Flyspeck 3.
flytrap => n. See {firewall machine}.
FOAF => // [USENET] n. Acronym for `Friend Of A Friend'. The source of an unverified, possibly untrue story. This was not originated by hackers (it is used in Jan Brunvand's books on urban folklore), but is much better recognized on USENET and elsewh...
FOD => /fod/ v. [Abbreviation for `Finger of Death', originally a spell-name from fantasy gaming] To terminate with extreme prejudice and with no regard for other people. From MUDs where the wizard command `FOD <player>' results in the immediate and ...
fold case => v. See {smash case}. This term tends to be used more by people who don't mind that their tools smash case. It also connotes that case is ignored but case distinctions in data processed by the tool in question aren't destroyed.
followup => n. On USENET, a posting generated in response to another posting (as opposed to a reply, which goes by email rather than being broadcast). Followups include the ID of the {parent message} in their headers; smart news-readers can use this ...
foo => /foo/ 1. interj. Term of disgust. 2. Used very generally as a sample name for absolutely anything, esp. programs and files (esp. scratch files). 3. First on the standard list of metasyntactic variables used in syntax examples. See also bar, ba...
foobar => n. Another common metasyntactic variable; see foo. Hackers do *not* generally use this to mean FUBAR in either the slang or jargon sense.
fool => n. As used by hackers, specifically describes a person who habitually reasons from obviously or demonstrably incorrect premises and cannot be persuaded by evidence to do otherwise; it is not generally used in its other senses, i.e., to descri...
fool file, the => [USENET] n. A notional repository of all the most dramatically and abysmally stupid utterances ever. There is a subgenre of {sig block}s that consists of the header "From the fool file" followed by some quote the poster wishes to re...
fool file, the2 => dimwittery; for this to be really effective, the quote has to be so obviously wrong as to be laughable. More than one USENETter has achieved an unwanted notoriety by being quoted in this way.
Foonly => n. 1. The PDP-10 successor that was to have been built by the Super Foonly project at the Stanford Artificial Intelligence Laboratory along with a new operating system. The intention was to leapfrog from the old DEC timesharing system SAIL ...
footprint => n. 1. The floor or desk area taken up by a piece of hardware. 2. [IBM] The audit trail (if any) left by a crashed program (often in plural, `footprints'). See also toeprint.
for free => adj. Said of a capability of a programming language or hardware equipment that is available by its design without needing cleverness to implement "In APL, we get the matrix operations for free." "And owing to the way revisions are stored ...
for free2 => trees for free." Usually it refers to a serendipitous feature of doing things a certain way (compare {big win}), but it may refer to an intentional but secondary feature.
for the rest of us => [from the Mac slogan "The computer for the rest of us"] adj. 1. Used to describe a spiffy product whose affordability shames other comparable products, or (more often) used sarcastically to describe spiffy but very overpriced pr...
for the rest of us2 => with a limited interface, deliberately limited capabilities, non-orthogonality, inability to compose primitives, or any other limitation designed to not `confuse' a na"ive user. This places an upper bound on how far that user c...
for the rest of us3 => get in the way of the task instead of helping accomplish it. Used in reference to Macintosh software which doesn't provide obvious capabilities because it is thought that the poor lusers might not be able to handle them. Become...
for the rest of us4 => third-party reference; thus, "Yes, it is an attractive program, but it's designed for The Rest Of Them" means a program that superficially looks neat but has no depth beyond the surface flash. See also {WIMP environment}, Macin...
fora => pl.n. Plural of forum.
foreground => [UNIX] vt. To foreground a task is to bring it to the top of one's stack for immediate processing, and hackers often use it in this sense for non-computer tasks. "If your presentation is due next week, I guess I'd better foreground writ...
forked => [UNIX; prob. influenced by a mainstream expletive] adj. Terminally slow, or dead. Originated when one system slowed to incredibly bad speeds because of a process recursively spawning copies of itself (using the UNIX system call `fork(2)') a...
Fortrash => /for'trash/ n. Hackerism for the FORTRAN language, referring to its primitive design, gross and irregular syntax, limited control constructs, and slippery, exception-filled semantics.
fortune cookie => [UNIX] n. A random quote, item of trivia, joke, or maxim printed to the user's tty at login time or (less commonly) at logout time. Items from this lexicon have often been used as fortune cookies. See {cookie file}.
forum => n. [USENET, GEnie CI$; pl. `fora' or `forums'] Any discussion group accessible through a dial-in BBS, a {mailing list}, or a newsgroup (see {network, the}). A forum functions much like a bulletin board; users submit postings for all to read ...
fossil => n. 1. In software, a misfeature that becomes understandable only in historical context, as a remnant of times past retained so as not to break compatibility. Example the retention of octal as default base for string escapes in C, in spite o...
four-color glossies => 1. Literature created by marketroids that allegedly containing technical specs but which is in fact as superficial as possible without being totally content-free. "Forget the four-color glossies, give me the tech ref manuals." ...
four-color glossies2 => superficiality even when the material is printed on ordinary paper in black and white. Four-color-glossy manuals are *never* useful for finding a problem. 2. [rare] Applied by extension to manual pages that don't contain enoug...
four-color glossies3 => program doesn't produce the expected or desired output.
fragile => adj. Syn brittle.
fred => n. 1. The personal name most frequently used as a metasyntactic variable (see foo). Allegedly popular because it's easy for a non-touch-typist to type on a standard QWERTY keyboard. Unlike {J. Random Hacker} or `J. Random Loser', this name ha...
frednet => /fred'net/ n. Used to refer to some random and uncommon protocol encountered on a network. "We're implementing bridging in our router to solve the frednet problem."
freeware => n. Free software, often written by enthusiasts and distributed by users' groups, or via electronic mail, local bulletin boards, USENET, or other electronic media. At one time, `freeware' was a trademark of Andrew Fluegelman, the author of...
freeze => v. To lock an evolving software distribution or document against changes so it can be released with some hope of stability. Carries the strong implication that the item in question will `unfreeze' at some future date. "OK, fix that bug and ...
fried => adj. 1. Non-working due to hardware failure; burnt out. Especially used of hardware brought down by a `power glitch' (see glitch), drop-outs, a short, or some other electrical event. (Sometimes this literally happens to electronic circuits! ...
friode => /fri'ohd/ [TMRC] n. A reversible (that is, fused or blown) diode. Compare fried.
fritterware => n. An excess of capability that serves no productive end. The canonical example is font-diddling software on the Mac (see macdink); the term describes anything that eats huge amounts of time for quite marginal gains in function but sed...
frob => /frob/ 1. n. [MIT] The TMRC definition was "FROB = a protruding arm or trunnion"; by metaphoric extension, a `frob' is any random small thing; an object that you can comfortably hold in one hand; something you can frob. See frobnitz. 2. vt. A...
frobnicate => /frob'ni-kayt/ vt. [Poss. derived from frobnitz, and usually abbreviated to frob, but `frobnicate' is recognized as the official full form.] To manipulate or adjust, to tweak. One frequently frobs bits or other 2-state devices. Thus "Pl...
frobnitz => /frob'nits/, pl. `frobnitzem' /frob'nit-zm/ or `frobni' /frob'ni/ n. An unspecified physical object, a widget. Also refers to electronic black boxes. This rare form is usually abbreviated to `frotz', or more commonly to frob. Also used ar...
frog => alt. `phrog' 1. interj. Term of disgust (we seem to have a lot of them). 2. Used as a name for just about anything. See foo. 3. n. Of things, a crock. 4. n. Of people, somewhere in between a turkey and a toad. 5. `froggy' adj. Similar to `bag...
frotz => /frots/ 1. n. See frobnitz. 2. `mumble frotz' An interjection of very mild disgust.
frotzed => /frotst/ adj. down because of hardware problems. Compare fried. A machine that is merely frotzed may be fixable without replacing parts, but a fried machine is more seriously damaged.
frowney => n. (alt. `frowney face') See emoticon.
fry => 1. vi. To fail. Said especially of smoke-producing hardware failures. More generally, to become non-working. Usage never said of software, only of hardware and humans. See fried, {magic smoke}. 2. vt. To cause to fail; to roach, toast, or hose...
FTP => /F-T-P/, *not* /fit'ip/ 1. [techspeak] n. The File Transfer Protocol for transmitting files between systems on the Internet. 2. vt. To beam a file using the File Transfer Protocol. 3. Sometimes used as a generic even for file transfers not usi...
FUBAR => n. The Failed UniBus Address Register in a VAX. A good example of how jargon can occasionally be snuck past the suits; see foobar.
fuck me harder => excl. Sometimes uttered in response to egregious misbehavior, esp. in software, and esp. of misbehaviors which seem unfairly persistent (as though designed in by the imp of the perverse). Often theatrically elaborated "Aiighhh! Fuck...
fuck me harder2 => curare-tipped wrought-iron fence *and no lubricants*!" The phrase is sometimes heard abbreviated `FMH' in polite company. [This entry is an extreme example of the hackish habit of coining elaborate and evocative terms for lossage. ...
fuck me harder3 => parody of mainstream expletives that has become a running gag in part of the hacker culture; it illustrates the hackish tendency to turn any situation, even one of extreme frustration, into an intellectual game (the point being, in...
fuck me harder4 => long-winded description of the most anatomically absurd mental image possible --- the short forms implicitly allude to all the ridiculous long forms ever spoken). Scatological language is actually relatively uncommon among hackers,...
fuck me harder5 => whether this entry ought to be included at all. As it reflects a live usage recognizably peculiar to the hacker culture, we feel it is in the hackish spirit of truthfulness and opposition to all forms of censorship to record it her...
FUD => /fuhd/ n. Defined by Gene Amdahl after he left IBM to found his own company "FUD is the fear, uncertainty, and doubt that IBM sales people instill in the minds of potential customers who might be considering [Amdahl] products." The idea, of co...
FUD wars => /fuhd worz/ n. [from FUD] Political posturing engaged in by hardware and software vendors ostensibly committed to standardization but actually willing to fragment the market to protect their own shares. The UNIX International vs. OSF conf...
fudge => 1. vt. To perform in an incomplete but marginally acceptable way, particularly with respect to the writing of a program. "I didn't feel like going through that pain and suffering, so I fudged it --- I'll fix it later." 2. n. The resulting co...
fudge factor => n. A value or parameter that is varied in an ad hoc way to produce the desired result. The terms `tolerance' and slop are also used, though these usually indicate a one-sided leeway, such as a buffer that is made larger than necessary...
fudge factor2 => how large it needs to be, and it is better to waste a little space than to lose completely for not having enough. A fudge factor, on the other hand, can often be tweaked in more than one direction. A good example is the `fuzz' typica...
fudge factor3 => calculations two numbers being compared for equality must be allowed to differ by a small amount; if that amount is too small, a computation may never terminate, while if it is too large, results will be needlessly inaccurate. Fudge ...
fudge factor4 => incorrectly by programmers who don't fully understand their import. See also {coefficient of X}.
fuel up => vi. To eat or drink hurriedly in order to get back to hacking. "Food-p?" "Yeah, let's fuel up." "Time for a great-wall!" See also {{oriental food}}.
fuggly => /fuhg'lee/ adj. Emphatic form of funky; funky + ugly). Unusually for hacker jargon, this may actually derive from black street-jive. To say it properly, the first syllable should be growled rather than spoken. Usage humorous. "Man, the {ASC...
funky => adj. Said of something that functions, but in a slightly strange, klugey way. It does the job and would be difficult to change, so its obvious non-optimality is left alone. Often used to describe interfaces. The more bugs something has that ...
funny money => n. 1. Notional `dollar' units of computing time and/or storage handed to students at the beginning of a computer course; also called `play money' or `purple money' (in implicit opposition to real or `green' money). When your funny mone...
funny money2 => you needed to go to a professor to get more. Fortunately, the plunging cost of timesharing cycles has made this less common. The amounts allocated were almost invariably too small, even for the non-hackers who wanted to slide by with ...
funny money3 => practice led to small-scale black markets in bootlegged computer accounts. 2. By extension, phantom money or quantity tickets of any kind used as a resource-allocation hack within a system. Antonym `real money'.
fuzzball => [TCP/IP hackers] n. A DEC LSI-11 running a particular suite of homebrewed software written by Dave Mills and assorted co-conspirators, used in the early 1980s for Internet protocol testbedding and experimentation. These were used as NSFne...
gabriel => /gay'bree-*l/ [for Dick Gabriel, SAIL LISP hacker and volleyball fanatic] n. An unnecessary (in the opinion of the opponent) stalling tactic, e.g., tying one's shoelaces or combing one's hair repeatedly, asking the time, etc. Also used to ...
gag => vi. Equivalent to choke, but connotes more disgust. "Hey, this is FORTRAN code. No wonder the C compiler gagged." See also barf.
gang bang => n. The use of large numbers of loosely coupled programmers in an attempt to wedge a great many features into a product in a short time. Though there have been memorable gang bangs (e.g., that over-the-weekend assembler port mentioned in ...
gang bang2 => perpetrated by large companies trying to meet deadlines and produce enormous buggy masses of code entirely lacking in orthogonality. When market-driven managers make a list of all the features the competition has and assign one programm...
gang bang3 => miss the importance of maintaining a coherent design. See also firefighting, {Mongolian Hordes technique}, {Conway's Law}.
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...
factpacks/jargon.fact view on Meta::CPAN
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.
hack mode => n. 1. What one is in when hacking, of course. 2. More specifically, a Zen-like state of total focus on The Problem that may be achieved when one is hacking (this is why every good hacker is part mystic). Ability to enter such concentrati...
hack mode2 => wizardliness; it is one of the most important skills learned during {larval stage}. Sometimes amplified as `deep hack mode'. Being yanked out of hack mode (see {priority interrupt}) may be experienced as a physical shock, and the sensat...
hack mode3 => little habituating. The intensity of this experience is probably by itself sufficient explanation for the existence of hackers, and explains why many resist being promoted out of positions where they can code. See also cyberspace (sense...
hack mode4 => etiquette will appear quite odd to an observer unaware of the high value placed on hack mode. For example, if someone appears at your door, it is perfectly okay to hold up a hand (without turning one's eyes away from the screen) to avoi...
hack mode5 => type, and interact with the computer for quite some time before further acknowledging the other's presence (of course, he or she is reciprocally free to leave without a word). The understanding is that you might be in {hack mode} with a...
hack mode6 => your head, and you dare not swap that context out until you have reached a good point to pause. See also {juggling eggs}.
hack on => vt. To hack; implies that the subject is some pre-existing hunk of code that one is evolving, as opposed to something one might {hack up}.
hack together => vt. To throw something together so it will work. Unlike `kluge together' or {cruft together}, this does not necessarily have negative connotations.
hack up => vt. To hack, but generally implies that the result is a hack in sense 1 (a quick hack). Contrast this with {hack on}. To `hack up on' implies a quick-and-dirty modification to an existing system. Contrast {hacked up}; compare {kluge up}, {...
hack value => n. Often adduced as the reason or motivation for expending effort toward a seemingly useless goal, the point being that the accomplished goal is a hack. For example, MacLISP had features for reading and printing Roman numerals, which we...
hack value2 => See {display hack} for one method of computing hack value, but this cannot really be explained. As a great artist once said of jazz "If you hafta ask, you ain't never goin' to find out."
hack-and-slay => v. (also `hack-and-slash') 1. To play a MUD or go mudding, especially with the intention of berserking for pleasure. 2. To undertake an all-night programming/hacking session, interspersed with stints of mudding as a change of pace. T...
hacked off => [analogous to `pissed off'] adj. Said of system administrators who have become annoyed, upset, or touchy owing to suspicions that their sites have been or are going to be victimized by crackers, or used for inappropriate, technically il...
hacked off2 => activities. For example, having unreadable files in your home directory called `worm', `lockpick', or `goroot' would probably be an effective (as well as impressively obvious and stupid) way to get your sysadmin hacked off at you.
hacked up => adj. Sufficiently patched, kluged, and tweaked that the surgical scars are beginning to crowd out normal tissue (compare {critical mass}). Not all programs that are hacked become `hacked up'; if modifications are done with some eye to co...
hacked up2 => maintainability, the software may emerge better for the experience. Contrast {hack up}.
hacker => [originally, someone who makes furniture with an axe] n. 1. A person who enjoys exploring the details of programmable systems and how to stretch their capabilities, as opposed to most users, who prefer to learn only the minimum necessary. 2...
hacking run => [analogy with `bombing run' or `speed run'] n. A hack session extended long outside normal working times, especially one longer than 12 hours. May cause you to `change phase the hard way' (see phase).
Hacking X for Y => [ITS] n. The information ITS made publicly available about each user (the INQUIR record) was a sort of form in which the user could fill out fields. On display, two of these fields were combined into a project description of the fo...
Hacking X for Y2 => `"Hacking perceptrons for Minsky"'). This form of description became traditional and has since been carried over to other systems with more general facilities for self-advertisement (such as UNIX {plan file}s).
Hackintosh => n. 1. An Apple Lisa that has been hacked into emulating a Macintosh (also called a `Mac XL'). 2. A Macintosh assembled from parts theoretically belonging to different models in the line.
hackish => /hak'ish/ adj. (also hackishness n.) 1. Said of something that is or involves a hack. 2. Of or pertaining to hackers or the hacker subculture. See also true-hacker.
hackishness => n. The quality of being or involving a hack. This term is considered mildly silly. Syn. hackitude.
hackitude => n. Syn. hackishness; this word is considered sillier.
hair => [back-formation from hairy] n. The complications that make something hairy. "Decoding TECO commands requires a certain amount of hair." Often seen in the phrase `infinite hair', which connotes extreme complexity. Also in `hairiferous' (tendin...
hairy => adj. 1. Annoyingly complicated. "DWIM is incredibly hairy." 2. Incomprehensible. "DWIM is incredibly hairy." 3. Of people, high-powered, authoritative, rare, expert, and/or incomprehensible. Hard to explain except in context "He knows this h...
HAKMEM => /hak'mem/ n. MIT AI Memo 239 (February 1972). A legendary collection of neat mathematical and programming hacks contributed by many people at MIT and elsewhere. (The title of the memo really is "HAKMEM", which is a 6-letterism for `hacks me...
hakspek => /hak'speek/ n. A shorthand method of spelling found on many British academic bulletin boards and {talker system}s. Syllables and whole words in a sentence are replaced by single ASCII characters the names of which are phonetically similar ...
hamster => n. 1. [Fairchild] A particularly slick little piece of code that does one thing well; a small, self-contained hack. The image is of a hamster happily spinning its exercise wheel. 2. [UK] Any item of hardware made by Amstrad, a company famo...
hand-hacking => n. 1. The practice of translating {hot spot}s from an HLL into hand-tuned assembler, as opposed to trying to coerce the compiler into generating better code. Both the term and the practice are becoming uncommon. See tune, bum, {by han...
handshaking => n. Hardware or software activity designed to start or keep two machines or programs in synchronization as they {do protocol}. Often applied to human activity; thus, a hacker might watch two people in conversation nodding their heads to...
handwave => [poss. from gestures characteristic of stage magicians] 1. v. To gloss over a complex point; to distract a listener; to support a (possibly actually valid) point with blatantly faulty logic. 2. n. The act of handwaving. "Boy, what a handw...
hang => v. 1. To wait for an event that will never occur. "The system is hanging because it can't read from the crashed drive". See wedged, hung. 2. To wait for some event to occur; to hang around until something happens. "The program displays a menu...
Hanlon's Razor => prov. A corollary of {Finagle's Law}, similar to Occam's Razor, that reads "Never attribute to malice that which can be adequately explained by stupidity." The derivation of the common title Hanlon's Razor is unknown; a similar epig...
Hanlon's Razor2 => James. Quoted here because it seems to be a particular favorite of hackers, often showing up in {fortune cookie} files and the login banners of BBS systems and commercial networks. This probably reflects the hacker's daily experien...
Hanlon's Razor3 => well-intentioned but short-sighted people.
happily => adv. Of software, used to emphasize that a program is unaware of some important fact about its environment, either because it has been fooled into believing a lie, or because it doesn't care. The sense of `happy' here is not that of elatio...
factpacks/jargon.fact view on Meta::CPAN
hash collision => [from the technical usage] n. (var. `hash clash') When used of people, signifies a confusion in associative memory or imagination, especially a persistent one (see thinko). True story One of us [ESR] was once on the phone with a fri...
hash collision2 => When asked what he expected Berkeley to be like, the friend replied "Well, I have this mental picture of naked women throwing Molotov cocktails, but I think that's just a collision in my hash tables." Compare {hash bucket}.
hat => n. Common (spoken) name for the circumflex (`^', ASCII 1011110) character. See ASCII for other synonyms.
HCF => /H-C-F/ n. Mnemonic for `Halt and Catch Fire', any of several undocumented and semi-mythical machine instructions with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the...
heads down => [Sun] adj. Concentrating, usually so heavily and for so long that everything outside the focus area is missed. See also {hack mode} and {larval stage}, although it is not confined to fledgling hackers.
heartbeat => n. 1. The signal emitted by a Level 2 Ethernet transceiver at the end of every packet to show that the collision-detection circuit is still connected. 2. A periodic synchronization signal used by software or hardware, such as a bus clock...
heavy metal => [Cambridge] n. Syn. {big iron}.
heavy wizardry => n. Code or designs that trade on a particularly intimate knowledge or experience of a particular operating system or language or complex application interface. Distinguished from {deep magic}, which trades more on arcane *theoretica...
heavy wizardry2 => drivers is heavy wizardry; so is interfacing to X (sense 2) without a toolkit. Esp. found in comments similar to "Heavy wizardry begins here ...". Compare {voodoo programming}.
heavyweight => adj. High-overhead; baroque; code-intensive; featureful, but costly. Esp. used of communication protocols, language designs, and any sort of implementation in which maximum generality and/or ease of implementation has been pushed at th...
heisenbug => /hi'zen-buhg/ [from Heisenberg's Uncertainty Principle in quantum physics] n. A bug that disappears or alters its behavior when one attempts to probe or isolate it. Antonym of {Bohr bug}; see also mandelbug. In C, nine out of ten heisenb...
Helen Keller mode => n. State of a hardware or software system that is deaf, dumb, and blind, i.e., accepting no input and generating no output, usually due to an infinite loop or some other excursion into {deep space}. (Unfair to the real Helen Kell...
Helen Keller mode2 => was triumphant.) See also {go flatline}, catatonic.
hello, sailor! => interj. Occasional West Coast equivalent of {hello, world}; seems to have originated at SAIL, later associated with the game Zork (which also included "hello, aviator" and "hello, implementor"). Originally from the traditional hooke...
hello, sailor!2 => off the boat, of course.
hello, wall! => excl. See wall.
hello, world => interj. 1. The canonical minimal test message in the C/UNIX universe. 2. Any of the minimal programs that emit this message. Traditionally, the first program a C coder is supposed to write in a new environment is one that just prints ...
hello, world2 => (and indeed it is the first example program in K&R). Environments that generate an unreasonably large executable for this trivial test or which require a hairy compiler-linker invocation to generate it are considered to lose (see X)....
hello, world3 => hacker making an entrance or requesting information from anyone present. "Hello, world! Is the VAX back up yet?"
hex => n. 1. Short for {hexadecimal}, base 16. 2. A 6-pack of anything (compare quad, sense 2). Neither usage has anything to do with magic or {black art}, though the pun is appreciated and occasionally used by hackers. True story As a joke, some hac...
hexadecimal => n. Base 16. Coined in the early 1960s to replace earlier `sexadecimal', which was too racy and amusing for stuffy IBM, and later adopted by the rest of the industry. Actually, neither term is etymologically pure. If we take `binary' to...
hexit => /hek'sit/ n. A hexadecimal digit (0--9, and A--F or a--f). Used by people who claim that there are only *ten* digits, dammit; sixteen-fingered human beings are rather rare, despite what some keyboard designs might seem to imply (see {space-c...
hidden flag => [scientific computation] n. An extra option added to a routine without changing the calling sequence. For example, instead of adding an explicit input variable to instruct a routine to give extra diagnostic output, the programmer might...
hidden flag2 => meaningless feature of the existing inputs, such as a negative mass. Liberal use of hidden flags can make a program very hard to debug and understand.
high bit => [from `high-order bit'] n. 1. The most significant bit in a byte. 2. By extension, the most significant part of something other than a data byte "Spare me the whole saga, just give me the high bit." See also {meta bit}, hobbit, {dread hig...
high bit2 => mainstream slang `bottom line'.
high moby => /hi' mohb'ee/ n. The high half of a 512K PDP-10's physical address space; the other half was of course the low moby. This usage has been generalized in a way that has outlasted the PDP-10; for example, at the 1990 Washington D.C. Area Sc...
high moby2 => (Disclave), when a miscommunication resulted in two separate wakes being held in commemoration of the shutdown of MIT's last {ITS} machines, the one on the upper floor was dubbed the `high moby' and the other the `low moby'. All parties...
highly => [scientific computation] adv. The preferred modifier for overstating an understatement. As in `highly nonoptimal', the worst possible way to do something; `highly nontrivial', either impossible or requiring a major research project; `highly...
hirsute => adj. Occasionally used humorously as a synonym for hairy.
HLL => /H-L-L/ n. [High-Level Language (as opposed to assembler)] Found primarily in email and news rather than speech. Rarely, the variants `VHLL' and `MLL' are found. VHLL stands for `Very-High-Level Language' and is used to describe a {bondage-and...
hobbit => n. 1. The High Order Bit of a byte; same as the {meta bit} or {high bit}. 2. The non-ITS name of vad@ai.mit.edu (*Hobbit*), master of lasers.
hog => n.,vt. 1. Favored term to describe programs or hardware that seem to eat far more than their share of a system's resources, esp. those which noticeably degrade interactive response. *Not* used of programs that are simply extremely large or com...
holy wars => [from USENET, but may predate it] n. {flame war}s over {religious issues}. The paper by Danny Cohen that popularized the terms big-endian and little-endian in connection with the LSB-first/MSB-first controversy was entitled "On Holy Wars...
holy wars2 => perennial Holy Wars have included EMACS vs. vi, my personal computer vs. everyone else's personal computer, {ITS} vs. {UNIX}, {UNIX} vs. VMS, BSD UNIX vs. {USG UNIX}, C vs. {Pascal}, C vs. LISP, etc., ad nauseam. The characteristic that...
holy wars3 => distinguishes {holy wars} from normal technical disputes is that in a holy wars most of the participants spend their time trying to pass off personal value choices and cultural attachments as objective technical evaluations. See also th...
home box => n. A hacker's personal machine, especially one he or she owns. "Yeah? Well, *my* home box runs a full 4.2 BSD, so there!"
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....
factpacks/jargon.fact view on Meta::CPAN
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.
newbie => /n[y]oo'bee/ n. [orig. from British public-school and military slang variant of `new boy'] A USENET neophyte. This term surfaced in the newsgroup talk.bizarre but is now in wide use. Criteria for being considered a newbie vary wildly; a per...
newgroup wars => /n[y]oo'groop wohrz/ [USENET] n. The salvos of dueling `newgroup' and `rmgroup' messages sometimes exchanged by persons on opposite sides of a dispute over whether a newsgroup should be created net-wide. These usually settle out with...
newgroup wars2 => clear whether the group has a natural constituency (usually, it doesn't). At times, especially in the completely anarchic alt hierarchy, the names of newsgroups themselves become a form of comment or humor; e.g., the spinoff of alt....
newgroup wars3 => alt.tv.muppets in early 1990, or any number of specialized abuse groups named after particularly notorious flamers, e.g., alt.weemba.
newline => /n[y]oo'li:n/ n. 1. [techspeak, primarily UNIX] The ASCII LF character (0001010), used under {UNIX} as a text line terminator. A Bell-Labs-ism rather than a Berkeleyism; interestingly (and unusually for UNIX jargon), it is said to have ori...
NeWS => /nee'wis/, /n[y]oo'is/ or /n[y]ooz/ [acronym; the `Network Window System'] n. The road not taken in window systems, an elegant PostScript-based environment that would almost certainly have won the standards war with X if it hadn't been propri...
news => n. See netnews.
newsfroup => // [USENET] n. Silly synonym for newsgroup, originally a typo but now in regular use on USENET's talk.bizarre and other lunatic-fringe groups.
newsgroup => [USENET] n. One of USENET's huge collection of topic groups or fora. Usenet groups can be `unmoderated' (anyone can post) or `moderated' (submissions are automatically directed to a moderator, who edits or filters and then posts the resu...
nickle => /ni'kl/ [from `nickel', common name for the U.S. 5-cent coin] n. A nybble + 1; 5 bits. Reported among developers for Mattel's GI 1600 (the Intellivision games processor), a chip with 16-bit-wide RAM but 10-bit-wide ROM. See also deckle.
night mode => n. See phase (of people).
Nightmare File System => n. Pejorative hackerism for Sun's Network File System (NFS). In any nontrivial network of Suns where there is a lot of NFS cross-mounting, when one Sun goes down, the others often freeze up. Some machine tries to access the d...
Nightmare File System2 => repeats indefinitely. This causes it to appear dead to some messages (what is actually happening is that it is locked up in what should have been a brief excursion to a higher spl level). Then another machine tries to reach ...
Nightmare File System3 => pseudo-down machine, and itself becomes pseudo-down. The first machine to discover the down one is now trying both to access the down one and to respond to the pseudo-down one, so it is even harder to reach. This snowballs v...
Nightmare File System4 => network of machines is frozen --- the user can't even abort the file access that started the problem! (ITS partisans are apt to cite this as proof of UNIX's alleged bogosity; ITS had a working NFS-like shared file system wit...
Nightmare File System5 => 1970s.) See also {broadcast storm}.
NIL => /nil/ [from LISP terminology for `false'] No. Used in reply to a question, particularly one asked using the `-P' convention. See T.
NMI => /N-M-I/ n. Non-Maskable Interrupt. An IRQ 7 on the PDP-11 or 680[01234]0; the NMI line on an 8088,[1234]86. In contrast with a {priority interrupt} (which might be ignored, although that is unlikely), an NMI is *never* ignored.
no-op => /noh'op/ alt. NOP /nop/ [no operation] n. 1. (also v.) A machine instruction that does nothing (sometimes used in assembler-level programming as filler for data or patch areas, or to overwrite code to be removed in binaries). See also JFCL. ...
noddy => /nod'ee/ [UK: from the children's books] adj. 1. Small and un-useful, but demonstrating a point. Noddy programs are often written by people learning a new language or system. The archetypal noddy program is {hello, world}. Noddy code may be ...
NOMEX underwear => /noh'meks uhn'-der-weir/ [USENET] n. Syn. {asbestos longjohns}, used mostly in auto-related mailing lists and newsgroups. NOMEX underwear is an actual product available on the racing equipment market, used as a fire resistance meas...
non-optimal solution => n. (also `sub-optimal solution') An astoundingly stupid way to do something. This term is generally used in deadpan sarcasm, as its impact is greatest when the person speaking looks completely serious. Compare stunning. See al...
nonlinear => adj. [scientific computation] 1. Behaving in an erratic and unpredictable fashion. When used to describe the behavior of a machine or program, it suggests that said machine or program is being forced to run far outside of design specific...
nontrivial => adj. Requiring real thought or significant computing power. Often used as an understated way of saying that a problem is quite difficult or impractical, or even entirely unsolvable ("Proving P=NP is nontrivial"). The preferred emphatic ...
notwork => /not'werk/ n. A network, when it is acting flaky or is down. Compare nyetwork. Said at IBM to have orig. referred to a particular period of flakiness on IBM's VNET corporate network, ca. 1988; but there are independent reports of the term ...
NP- => /N-P/ pref. Extremely. Used to modify adjectives describing a level or quality of difficulty; the connotation is often `more so than it should be' (NP-complete problems all seem to be very hard, but so far no one has found a good a priori reas...
nuke => vt. 1. To intentionally delete the entire contents of a given directory or storage volume. "On UNIX, `rm -r /usr' will nuke everything in the usr filesystem." Never used for accidental deletion. Oppose {blow away}. 2. Syn. for dike, applied t...
number-crunching => n. Computations of a numerical nature, esp. those that make extensive use of floating-point numbers. The only thing Fortrash is good for. This term is in widespread informal use outside hackerdom and even in mainstream slang, but ...
numbers => [scientific computation] n. Output of a computation that may not be significant results but at least indicate that the program is running. May be used to placate management, grant sponsors, etc. `Making numbers' means running a program bec...
NUXI problem => /nuk'see pro'bl*m/ n. This refers to the problem of transferring data between machines with differing byte-order. The string `UNIX' might look like `NUXI' on a machine with a different `byte sex' (e.g., when transferring data from a l...
NUXI problem2 => vice-versa). See also middle-endian, swab, and bytesexual.
nybble => /nib'l/ (alt. `nibble') [from v. `nibble' by analogy with `bite' => `byte'] n. Four bits; one hex digit; a half-byte. Though `byte' is now techspeak, this useful relative is still jargon. Compare {byte}, crumb, tayste, dynner; see also bit,...
nyetwork => /nyet'werk/ [from Russian `nyet' = no] n. A network, when it is acting flaky or is down. Compare notwork.
Ob- => /ob/ pref. Obligatory. A piece of netiquette acknowledging that the author has been straying from the newsgroup's charter topic. For example, if a posting in alt.sex is a response to a part of someone else's posting that has nothing particular...
Obfuscated C Contest => n. An annual contest run since 1984 over USENET by Landon Curt Noll and friends. The overall winner is whoever produces the most unreadable, creative, and bizarre (but working) C program; various other prizes are awarded at th...
Obfuscated C Contest2 => and macro-preprocessor facilities give contestants a lot of maneuvering room. The winning programs often manage to be simultaneously (a) funny, (b) breathtaking works of art, and (c) horrible examples of how *not* to code in ...
Obfuscated C Contest3 => entry might help convey the flavor of obfuscated C /* * HELLO WORLD program * by Jack Applin and Robert Heckendorn, 1985 */ main(v,c)char**c;{for(v[c++]="Hello, world!\n)"; (!!c)[*c]&&(v--||--c&&execlp(*c,*c,c[!!c]+!!c,!c)); ...
obi-wan error => /oh'bee-won` er'*r/ [RPI, from `off-by-one' and the Obi-Wan Kenobi character in "Star Wars"] n. A loop of some sort in which the index is off by 1. Common when the index should have started from 0 but instead started from 1. A kind o...
Objectionable-C => n. Hackish take on "Objective-C", the name of an object-oriented dialect of C in competition with the better-known C++ (it is used to write native applications on the NeXT machine). Objectionable-C uses a Smalltalk-like syntax, but...
obscure => adj. Used in an exaggeration of its normal meaning, to imply total incomprehensibility. "The reason for that last crash is obscure." "The `find(1)' command's syntax is obscure!" The phrase `moderately obscure' implies that it could be figu...
octal forty => /ok'tl for'tee/ n. Hackish way of saying "I'm drawing a blank." Octal 40 is the {ASCII} space character, 0100000; by an odd coincidence, hex 40 (01000000) is the {EBCDIC} space character. See wall.
off the trolley => adj. Describes the behavior of a program that malfunctions and goes catatonic, but doesn't actually crash or abort. See glitch, bug, {deep space}.
off-by-one error => n. Exceedingly common error induced in many ways, such as by starting at 0 when you should have started at 1 or vice versa, or by writing `< N' instead of `<= N' or vice-versa. Also applied to giving something to the person next t...
off-by-one error2 => Often confounded with {fencepost error}, which is properly a particular subtype of it.
offline => adv. Not now or not here. "Let's take this discussion offline." Specifically used on USENET to suggest that a discussion be taken off a public newsgroup to email.
old fart => n. Tribal elder. A title self-assumed with remarkable frequency by (esp.) USENETters who have been programming for more than about 25 years; often appears in {sig block}s attached to Jargon File contributions of great archeological signif...
old fart2 => the second or third person but one of pride in first person.
Old Testament => n. [C programmers] The first edition of K&R, the sacred text describing {Classic C}.
one-line fix => n. Used (often sarcastically) of a change to a program that is thought to be trivial or insignificant right up to the moment it crashes the system. Usually `cured' by another one-line fix. See also {I didn't change anything!}
one-liner wars => n. A game popular among hackers who code in the language APL (see {write-only language}). The objective is to see who can code the most interesting and/or useful routine in one line of operators chosen from APL's exceedingly hairy p...
one-liner wars2 => was practiced among TECO hackers. Ken Iverson, the inventor of APL, has been credited with a one-liner that, given a number N, produces a list of the prime numbers from 1 to N inclusive. It looks like this (2 = 0 +.= T o.| T) / T <...
one-liner wars3 => character, the assignment arrow is a single character, and `i' represents the APL iota.
ooblick => /oo'blik/ [from Dr. Seuss's `Bartholomew and the Oobleck'] n. A bizarre semi-liquid sludge made from cornstarch and water. Enjoyed among hackers who make batches during playtime at parties for its amusing and extremely non-Newtonian behavi...
open => n. Abbreviation for `open (or left) parenthesis' --- used when necessary to eliminate oral ambiguity. To read aloud the LISP form (DEFUN FOO (X) (PLUS X 1)) one might say "Open defun foo, open eks close, open, plus eks one, close close."
open switch => [IBM prob. from railroading] n. An unresolved question, issue, or problem.
operating system => [techspeak] n. (Often abbreviated `OS') The foundation software of a machine, of course; that which schedules tasks, allocates storage, and presents a default interface to the user between applications. The facilities an operating...
operating system2 => design philosophy exert an extremely strong influence on programming style and on the technical cultures that grow up around its host machines. Hacker folklore has been shaped primarily by the {UNIX}, {ITS}, {TOPS-10}, {TOPS-20}}...
operating system3 => {CP/M}, {MS-DOS}, and {Multics} operating systems (most importantly by ITS and UNIX).
Orange Book => n. The U.S. Government's standards document `Trusted Computer System Evaluation Criteria, DOD standard 5200.28-STD, December, 1985' which characterize secure computing architectures and defines levels A1 (most secure) through D (least)...
Orange Book2 => can be upgraded to about C1 without excessive pain. See also {{book titles}}.
oriental food => n. Hackers display an intense tropism towards oriental cuisine, especially Chinese, and especially of the spicier varieties such as Szechuan and Hunan. This phenomenon (which has also been observed in subcultures that overlap heavily...
oriental food2 => science-fiction fandom) has never been satisfactorily explained, but is sufficiently intense that one can assume the target of a hackish dinner expedition to be the best local Chinese place and be right at least three times out of f...
oriental food3 => {stir-fried random}, {laser chicken}, {Yu-Shiang Whole Fish}. Thai, Indian, Korean, and Vietnamese cuisines are also quite popular.
orphan => [UNIX] n. A process whose parent has died; one inherited by `init(1)'. Compare zombie.
orphaned i-node => /or'f*nd i'nohd/ [UNIX] n. 1. [techspeak] A file that retains storage but no longer appears in the directories of a filesystem. 2. By extension, a pejorative for any person serving no useful function within some organization, esp. ...
orthogonal => [from mathematics] adj. Mutually independent; well separated; sometimes, irrelevant to. Used in a generalization of its mathematical meaning to describe sets of primitives or capabilities that, like a vector basis in geometry, span the ...
OS => /O-S/ 1. [Operating System] n. An acronym heavily used in email, occasionally in speech. 2. n.,obs. On ITS, an output spy. See appendix A.
OS/2 => /O S too/ n. The anointed successor to MS-DOS for Intel 286- and 386-based micros; proof that IBM/Microsoft couldn't get it right the second time, either. Mentioning it is usually good for a cheap laugh among hackers --- the design was so bar...
out-of-band => [from telecommunications and network theory] adj. 1. In software, describes values of a function which are not in its `natural' range of return values, but are rather signals that some kind of exception has occurred. Many C functions, ...
overflow bit => n. 1. [techspeak] On some processors, an attempt to calculate a result too large for a register to hold causes a particular flag called an {overflow bit} to be set. 2. Hackers use the term of human thought too. "Well, the {Ada} descri...
overflow bit2 => but I could hack it OK until they got to the exception handling ... that set my overflow bit." 3. The hypothetical bit that will be set if a hacker doesn't get to make a trip to the Room of Porcelain Fixtures "I'd better process an i...
overrun => n. 1. [techspeak] Term for a frequent consequence of data arriving faster than it can be consumed, esp. in serial line communications. For example, at 9600 baud there is almost exactly one character per millisecond, so if your silo can hol...
overrun screw => [C programming] n. A variety of {fandango on core} produced by scribbling past the end of an array (C has no checks for this). This is relatively benign and easy to spot if the array is static; if it is auto, the result may be to {sm...
overrun screw2 => in heisenbugs of the most diabolical subtlety. The term `overrun screw' is used esp. of scribbles beyond the end of arrays allocated with `malloc(3)'; this typically trashes the allocation header for the next block in the arena, pro...
overrun screw3 => malloc and often a core dump on the next operation to use `stdio(3)' or `malloc(3)' itself. See spam, overrun; see also {memory leak}, {aliasing bug}, {precedence lossage}, {fandango on core}, {secondary damage}.*P.O.D. /P-O-D/ Acro...
overrun screw4 => opposed to a code section). Usage pedantic and rare. See also pod.
padded cell => n. Where you put lusers so they can't hurt anything. A program that limits a luser to a carefully restricted subset of the capabilities of the host system (for example, the `rsh(1)' utility on USG UNIX). Note that this is different fro...
padded cell2 => overt and not aimed at enforcing security so much as protecting others (and the luser) from the consequences of the luser's boundless na"ivet'e (see na"ive). Also `padded cell environment'.
page in => [MIT] vi. 1. To become aware of one's surroundings again after having paged out (see {page out}). Usually confined to the sarcastic comment "Eric pages in. Film at 11." See {film at 11}. 2. Syn. `swap in'; see swap.
page out => [MIT] vi. 1. To become unaware of one's surroundings temporarily, due to daydreaming or preoccupation. "Can you repeat that? I paged out for a minute." See {page in}. Compare glitch, thinko. 2. Syn. `swap out'; see swap.
pain in the net => n. A flamer.
paper-net => n. Hackish way of referring to the postal service, analogizing it to a very slow, low-reliability network. USENET {sig block}s not uncommonly include a "Paper-Net" header just before the sender's postal address; common variants of this a...
param => /p*-ram'/ n. Shorthand for `parameter'. See also parm; Compare arg, var.
parent message => n. See followup.
parity errors => pl.n. Little lapses of attention or (in more severe cases) consciousness, usually brought on by having spent all night and most of the next day hacking. "I need to go home and crash; I'm starting to get a lot of parity errors." Deriv...
parity errors2 => nearly always correctable transient error in RAM hardware.
Parkinson's Law of Data => prov. "Data expands to fill the space available for storage"; buying more memory encourages the use of more memory-intensive techniques. It has been observed over the last 10 years that the memory usage of evolving systems ...
Parkinson's Law of Data2 => 18 months. Fortunately, memory density available for constant dollars tends to double about once every 12 months (see {Moore's Law}); unfortunately, the laws of physics guarantee that the latter cannot continue indefinitel...
parm => /parm/ n. Further-compressed form of param. This term is an IBMism, and written use is almost unknown outside IBM shops; spoken /parm/ is more widely distributed, but the synonym arg is favored among hackers. Compare arg, var.
parse => [from linguistic terminology] vt. 1. To determine the syntactic structure of a sentence or other utterance (close to the standard English meaning). "That was the one I saw you." "I can't parse that." 2. More generally, to understand or compr...
Pascal => n. An Algol-descended language designed by Niklaus Wirth on the CDC 6600 around 1967--68 as an instructional tool for elementary programming. This language, designed primarily to keep students from shooting themselves in the foot and thus e...
patch => 1. n. A temporary addition to a piece of code, usually as a quick-and-dirty remedy to an existing bug or misfeature. A patch may or may not work, and may or may not eventually be incorporated permanently into the program. Distinguished from ...
patch space => n. An unused block of bits left in a binary so that it can later be modified by insertion of machine-language instructions there (typically, the patch space is modified to contain new code, and the superseded code is patched to contain...
patch space2 => The widening use of HLLs has made this term rare; it is now primarily historical outside IBM shops. See patch (sense 4), zap (sense 4), hook.
path => n. 1. A {bang path} or explicitly routed {{Internet address}}; a node-by-node specification of a link between two machines. 2. [UNIX] A filename, fully specified relative to the root directory (as opposed to relative to the current directory;...
pathological => adj. 1. [scientific computation] Used of a data set that is grossly atypical of normal expected input, esp. one that exposes a weakness or bug in whatever algorithm one is using. An algorithm that can be broken by pathological inputs ...
payware => /pay'weir/ n. Commercial software. Oppose shareware or freeware.
PBD => /P-B-D/ [abbrev. of `Programmer Brain Damage'] n. Applied to bug reports revealing places where the program was obviously broken by an incompetent or short-sighted programmer. Compare UBD; see also brain-damaged.
PC-ism => /P-C-izm/ n. A piece of code or coding technique that takes advantage of the unprotected single-tasking environment in IBM PCs and the like, e.g., by busy-waiting on a hardware register, direct diddling of screen memory, or using hard timin...
PD => /P-D/ adj. Common abbreviation for `public domain', applied to software distributed over USENET and from Internet archive sites. Much of this software is not in fact public domain in the legal sense but travels under various copyrights granting...
pdl => /pid'l/ or /puhd'l/ [acronym for `Push Down List'] 1. In ITS days, the preferred MITism for stack. 2. Dave Lebling, one of the co-authors of Zork; (his {network address} on the ITS machines was at one time pdl@dms). 3. `Program Design Language...
PDP-10 => [Programmed Data Processor model 10] n. The machine that made timesharing real. It looms large in hacker folklore because of its adoption in the mid-1970s by many university computing facilities and research labs, including the MIT AI Lab, ...
PDP-20 => n. The most famous computer that never was. PDP-10 computers running the {TOPS-10} operating system were labeled `DECsystem-10' as a way of differentiating them from the PDP-11. Later on, those systems running TOPS-20 were labeled `DECSYSTE...
peek => n.,vt. (and poke) The commands in most microcomputer BASICs for directly accessing memory contents at an absolute address; often extended to mean the corresponding constructs in any HLL (peek reads memory, poke modifies it). Much hacking on s...
pencil and paper => n. An archaic information storage and transmission device that works by depositing smears of graphite on bleached wood pulp. More recent developments in paper-based technology include improved `write-once' update devices which use...
pencil and paper2 => balls to deposit colored pigment. All these devices require an operator skilled at so-called `handwriting' technique. These technologies are ubiquitous outside hackerdom, but nearly forgotten inside it. Most hackers had terrible ...
pencil and paper3 => years of keyboarding tend to have encouraged it to degrade further. Perhaps for this reason, hackers deprecate pencil-and-paper technology and often resist using it in any but the most trivial contexts. See also appendix B.
peon => n. A person with no special (root or wheel) privileges on a computer system. "I can't create an account on *foovax* for you; I'm only a peon there."
percent-S => /per-sent' es'/ [From the code in C's `printf(3)' library function used to insert an arbitrary string argument] n. An unspecified person or object. "I was just talking to some percent-s in administration." Compare random.
perf => /perf/ n. See chad (sense 1). The term `perfory' /per'f*-ree/ is also heard.
perfect programmer syndrome => n. Arrogance; the egotistical conviction that one is above normal human error. Most frequently found among programmers of some native ability but relatively little experience (especially new graduates; their perceptions...
perfect programmer syndrome2 => excellent performance at solving {toy problem}s). "Of course my program is correct, there is no need to test it." "Yes, I can see there may be a problem here, but *I'll* never type `rm -r /' while in root."
Perl => /perl/ [Practical Extraction and Report Language, a.k.a Pathologically Eclectic Rubbish Lister] n. An interpreted language developed by Larry Wall (lwall@jpl.nasa.gov, author of `patch(1)' and `rn(1)') and distributed over USENET. Superficial...
pessimal => /pes'im-l/ [Latin-based antonym for `optimal'] adj. Maximally bad. "This is a pessimal situation." Also `pessimize' vt. To make as bad as possible. These words are the obvious Latin-based antonyms for `optimal' and `optimize', but for som...
pessimizing compiler => /pes'*-miz`ing k*m-pil'r/ [antonym of `optimizing compiler'] n. A compiler that produces object code that is worse than the straightforward or obvious hand translation. The implication is that the compiler is actually trying t...
pessimizing compiler2 => excessive cleverness is doing the opposite. A few pessimizing compilers have been written on purpose, however, as pranks or burlesques.
peta- => /pe't*/ [SI] pref. See {quantifiers}.
PETSCII => /pet'skee/ [abbreviation of PET ASCII] n. The variation (many would say perversion) of the {ASCII} character set used by the Commodore Business Machines PET series of personal computers and the later Commodore C64, C16, and C128 machines. ...
phase => 1. n. The phase of one's waking-sleeping schedule with respect to the standard 24-hour cycle. This is a useful concept among people who often work at night and/or according to no fixed schedule. It is not uncommon to change one's phase by as...
phase of the moon => n. Used humorously as a random parameter on which something is said to depend. Sometimes implies unreliability of whatever is dependent, or that reliability seems to be dependent on conditions nobody has been able to determine. "...
phase of the moon2 => channel open in mumble mode, having the foo switch set, and on the phase of the moon." True story Once upon a time there was a bug that really did depend on the phase of the moon. There is a little subroutine that had traditiona...
phase of the moon3 => MIT to calculate an approximation to the moon's true phase. GLS incorporated this routine into a LISP program that, when it wrote out a file, would print a timestamp line almost 80 characters long. Very occasionally the first li...
phase of the moon4 => and would overflow onto the next line, and when the file was later read back in the program would barf. The length of the first line depended on both the precise date and time and the length of the phase specification when the t...
phase of the moon5 => bug literally depended on the phase of the moon! The first paper edition of the Jargon File (Steele-1983) included an example of one of the timestamp lines that exhibited this bug, but the typesetter `corrected' it. This has sin...
phreaking => [from `phone phreak'] n. 1. The art and science of cracking the phone network (so as, for example, to make free long-distance calls). 2. By extension, security-cracking in any other context (especially, but not exclusively, on communicat...
pico- => [SI a quantifier meaning * 10^-12] pref. Smaller than nano-; used in the same rather loose connotative way as nano- and micro-. This usage is not yet common in the way nano- and micro- are, but should be instantly recognizable to any hacker....
run like a pig => v. To run very slowly on given hardware, said of software. Distinct from hog.
pilot error => [Sun from aviation] n. A user's misconfiguration or misuse of a piece of software, producing apparently buglike results (compare UBD). "Joe Luser reported a bug in sendmail that causes it to generate bogus headers." "That's not a bug, ...
ping => [from the TCP/IP acronym `Packet INternet Groper', prob. originally contrived to match the submariners' term for a sonar pulse] 1. n. Slang term for a small network message (ICMP ECHO) sent by a computer to check for the presence and alivenes...
Pink-Shirt Book => `The Peter Norton Programmer's Guide to the IBM PC'. The original cover featured a picture of Peter Norton with a silly smirk on his face, wearing a pink shirt. Perhaps in recognition of this usage, the current edition has a differ...
Pink-Shirt Book2 => pink shirt. See also {{book titles}}.
PIP => /pip/ [Peripheral Interchange Program] vt.,obs. To copy; from the program PIP on CP/M, RSX-11, RSTS/E, and OS/8 (derived from a utility on the PDP-6) that was used for file copying (and in OS/8 and RT-11 for just about every other file operati...
pistol => [IBM] n. A tool that makes it all too easy for you to shoot yourself in the foot. "UNIX `rm *' makes such a nice pistol!"
pizza box => [Sun] n. The largish thin box housing the electronics in (especially Sun) desktop workstations, so named because of its size and shape and the dimpled pattern that looks like air holes. Two meg single-platter removable disk packs used to...
pizza box2 => they were stuck into was referred to as a pizza oven. It's an index of progress that in the old days just the disk was pizza-sized, while now the entire computer is.
ANSI standard pizza => /an'see stan'd*rd peet'z*/ [CMU] Pepperoni and mushroom pizza. Coined allegedly because most pizzas ordered by CMU hackers during some period leading up to mid-1990 were of that flavor. See also {rotary debugger}; compare {tea,...
plain-ASCII => /playn-as'kee/ Syn. flat-ASCII.
plan file => [UNIX] n. On systems that support finger, the `.plan' file in a user's home directory is displayed when the user is fingered. This feature was originally intended to be used to keep potential fingerers apprised of one's location and near...
plan file2 => almost universally to humorous and self-expressive purposes (like a {sig block}). See {Hacking X for Y}.
platinum-iridium => adj. Standard, against which all others of the same category are measured. Usage silly. The notion is that one of whatever it is has actually been cast in platinum-iridium alloy and placed in the vault beside the Standard Kilogram...
playpen => [IBM] n. A room where programmers work. Compare {salt mines}.
playte => /playt/ 16 bits, by analogy with nybble and {byte}. Usage rare and extremely silly. See also dynner and crumb.
plingnet => /pling'net/ n. Syn. UUCPNET. Also see {{Commonwealth Hackish}}, which uses `pling' for bang (as in {bang path}).
plokta => /plok't*/ [Acronym for `Press Lots Of Keys To Abort'] v. To press random keys in an attempt to get some response from the system. One might plokta when the abort procedure for a program is not known, or when trying to figure out if the syst...
plonk => [USENET possibly influenced by British slang `plonk' for cheap booze] The sound a newbie makes as he falls to the bottom of a {kill file}. Used almost exclusively in the newsgroup talk.bizarre, this term (usually written "*plonk*") is a form...
plugh => /ploogh/ [from the ADVENT game] v. See xyzzy.
plumbing => [UNIX] n. Term used for shell code, so called because of the prevalence of `pipelines' that feed the output of one program to the input of another. Under UNIX, user utilities can often be implemented or at least prototyped by a suitable c...
PM => /P-M/ 1. v. (from `preventive maintenance') To bring down a machine for inspection or test purposes; see {scratch monkey}. 2. n. Abbrev. for `Presentation Manager', an elephantine OS/2 graphical user interface. See also {provocative maintenance...
pnambic => /p*-nam'bik/ [Acronym from the scene in the film version of `The Wizard of Oz' in which true nature of the wizard is first discovered "Pay no attention to the man behind the curtain."] 1. A stage of development of a process or function tha...
pod => [allegedly from acronym POD for `Prince Of Darkness'] n. A Diablo 630 (or, latterly, any letter-quality impact printer). From the DEC-10 PODTYPE program used to feed formatted text to it. See also P.O.D.
poke => n.,vt. See peek.
poll => v.,n. 1. [techspeak] The action of checking the status of an input line, sensor, or memory location to see if a particular external event has been registered. 2. To repeatedly call or check with someone "I keep polling him, but he's not answe...
polygon pusher => n. A chip designer who spends most of his or her time at the physical layout level (which requires drawing *lots* of multi-colored polygons). Also `rectangle slinger'.
POM => /P-O-M/ n. Common acronym for {phase of the moon}. Usage usually in the phrase `POM-dependent', which means flaky.
pop => [from the operation that removes the top of a stack, and the fact that procedure return addresses are saved on the stack] (also capitalized `POP' /pop/) 1. vt. To remove something from a stack or pdl. If a person says he/she has popped somethi...
POPJ => /pop'J/ [from a PDP-10 return-from-subroutine instruction] n.,v. To return from a digression. By verb doubling, "Popj, popj" means roughly "Now let's see, where were we?" See RTI.
posing => n. On a MUD, the use of `' or an equivalent command to announce to other players that one is taking a certain physical action that has no effect on the game (it may, however, serve as a social signal or propaganda device that induces other ...
post => v. To send a message to a {mailing list} or newsgroup. Distinguished in context from `mail'; one might ask, for example "Are you going to post the patch or mail it to known users?"
posting => n. Noun corresp. to v. post (but note that post can be nouned). Distinguished from a `letter' or ordinary email message by the fact that it is broadcast rather than point-to-point. It is not clear whether messages sent to a small mailing l...
postmaster => n. The email contact and maintenance person at a site connected to the Internet or UUCPNET. Often, but not always, the same as the admin. It is conventional for each machine to have a `postmaster' address that is aliased to this person.
pound on => vt. Syn. {bang on}.
power cycle => vt. (also, `cycle power' or just `cycle') To power off a machine and then power it on immediately, with the intention of clearing some kind of hung or gronked state. Syn. {120 reset}; see also {Big Red Switch}. Compare {Vulcan nerve pi...
power cycle2 => see the AI Koan in appendix A about Tom Knight and the novice.
PPN => /P-P-N/, /pip'n/ [from `Project-Programmer Number'] n. A user-ID under {TOPS-10} and its various mutant progeny at SAIL, BBN, CompuServe, and elsewhere. Old-time hackers from the PDP-10 era sometimes use this to refer to user IDs on other syst...
precedence lossage => /pre's*-dens los'*j/ [C programmers] n. Coding error in an expression due to unexpected grouping of arithmetic or logical operators by the compiler. Used esp. of certain common coding errors in C due to the nonintuitively low pr...
precedence lossage2 => `<<', and `>>' (for this reason, experienced C programmers deliberately forget the language's baroque precedence hierarchy and parenthesize defensively). Can always be avoided by suitable use of parentheses. LISP fans enjoy poi...
precedence lossage3 => happen in *their* favorite language, which eschews precedence entirely, requiring one to use explicit parentheses everywhere. See {aliasing bug}, {memory leak}, {smash the stack}, {fandango on core}, {overrun screw}.
prepend => /pree`pend'/ [by analogy with `append'] vt. To prefix. As with `append' (but not `prefix' or `suffix' as a verb), the direct object is always the thing being added and not the original word (or character string, or whatever). "If you prepe...
prestidigitization => /pres`t*-di`j*-ti-zay'sh*n/ n. 1. The act of putting something into digital notation via sleight of hand. 2. Data entry through legerdemain.
pretty pictures => n. [scientific computation] The next step up from numbers. Interesting graphical output from a program that may not have any sensible relationship to the system the program is intended to model. Good for showing to management.
prettyprint => /prit'ee-print/ (alt. `pretty-print') v. 1. To generate `pretty' human-readable output from a hairy internal representation; esp. used for the process of grinding (sense 2) LISP code. 2. To format in some particularly slick and nontriv...
pretzel key => [Mac users] n. See {command key}.
prime time => [from TV programming] n. Normal high-usage hours on a timesharing system; the day shift. Avoidance of prime time is a major reason for {night mode} hacking.
priority interrupt => [from the hardware term] n. Describes any stimulus compelling enough to yank one right out of {hack mode}. Classically used to describe being dragged away by an SO for immediate sex, but may also refer to more mundane interrupti...
priority interrupt2 => in the near vicinity. Also called an NMI (non-maskable interrupt), especially in PC-land.
profile => n. 1. A control file for a program, esp. a text file automatically read from each user's home directory and intended to be easily modified by the user in order to customize the program's behavior. Used to avoid hardcoded choices. 2. [techs...
proglet => /prog'let/ [UK] n. A short extempore program written to meet an immediate, transient need. Often written in BASIC, rarely more than a dozen lines long, and contains no subroutines. The largest amount of code that can be written off the top...
program => n. 1. A magic spell cast over a computer allowing it to turn one's input into error messages. 2. An exercise in experimental epistemology. 3. A form of art, ostensibly intended for the instruction of computers, which is nevertheless almost...
Programmer's Cheer => "Shift to the left! Shift to the right! Pop up, push down! Byte! Byte! Byte!" A joke so old it has hair on it.
programming => n. 1. The art of debugging a blank sheet of paper (or, in these days of on-line editing, the art of debugging an empty file). 2. n. A pastime similar to banging one's head against a wall, but with fewer opportunities for reward. 3. n. ...
propeller head => n. Used by hackers, this is syn. with {computer geek}. Non-hackers sometimes use it to describe all techies. Prob. derives from SF fandom's tradition (originally invented by old-time fan Ray Faraday Nelson) of propeller beanies as f...
propeller head2 => actually wears them except as a joke).
propeller key => [Mac users] n. See {command key}.
proprietary => adj. 1. In marketroid-speak, superior; implies a product imbued with exclusive magic by the unmatched brilliance of the company's hardware or software designers. 2. In the language of hackers and users, inferior; implies a product not ...
protocol => n. As used by hackers, this never refers to niceties about the proper form for addressing letters to the Papal Nuncio or the order in which one should use the forks in a Russian-style place setting; hackers don't care about such things. I...
provocative maintenance => [common ironic mutation of `preventive maintenance'] n. Actions performed upon a machine at regularly scheduled intervals to ensure that the system remains in a usable state. So called because it is all too often performed ...
provocative maintenance2 => know what he is doing; this results in the machine's remaining in an *un*usable state for an indeterminate amount of time. See also {scratch monkey}.
prowler => [UNIX] n. A daemon that is run periodically (typically once a week) to seek out and erase core files, truncate administrative logfiles, nuke `lost+found' directories, and otherwise clean up the cruft that tends to pile up in the corners of...
pseudo => /soo'doh/ [USENET truncation of `pseudonym'] n. 1. An electronic-mail or USENET persona adopted by a human for amusement value or as a means of avoiding negative repercussions of one's net.behavior; a `nom de USENET', often associated with ...
pseudoprime => n. A backgammon prime (six consecutive occupied points) with one point missing. This term is an esoteric pun derived from a mathematical method that, rather than determining precisely whether a number is prime (has no divisors), uses a...
pseudosuit => /soo'doh-s[y]oot`/ n. A suit wannabee; a hacker who has decided that he wants to be in management or administration and begins wearing ties, sport coats, and (shudder!) suits voluntarily. It's his funeral. See also lobotomy.
psychedelicware => /si`k*-del'-ik-weir/ [UK] n. Syn. {display hack}. See also {smoking clover}.
psyton => /si'ton/ [TMRC] n. The elementary particle carrying the sinister force. The probability of a process losing is proportional to the number of psytons falling on it. Psytons are generated by observers, which is why demos are more likely to fa...
pubic directory => [NYU] (also `pube directory' /pyoob' d*-rek't*-ree/) n. The `pub' (public) directory on a machine that allows FTP access. So called because it is the default location for SEX (sense 1). "I'll have the source in the pube directory b...
puff => vt. To decompress data that has been crunched by Huffman coding. At least one widely distributed Huffman decoder program was actually *named* `PUFF', but these days it is usually packaged with the encoder. Oppose huff.
punched card => alt. `punch card' [techspeak] n.obs. The signature medium of computing's {Stone Age}, now obsolescent outside of some IBM shops. The punched card actually predated computers considerably, originating in 1801 as a control device for me...
punched card2 => patented by Hollerith and used with mechanical tabulating machines in the 1890 U.S. Census was a piece of cardboard about 90 mm by 215 mm, designed to fit exactly in the currency trays used for that era's larger dollar bills. IBM (wh...
punched card3 => manufacturer) married the punched card to computers, encoding binary information as patterns of small rectangular holes; one character per column, 80 columns per card. Other coding schemes, sizes of card, and hole shapes were tried a...
punched card4 => width of most character terminals is a legacy of the IBM punched card; so is the size of the quick-reference cards distributed with many varieties of computers even today. See chad, {chad box}, {eighty-column mind}, {green card}, {du...
punt => [from the punch line of an old joke referring to American football "Drop back 15 yards and punt!"] v. 1. To give up, typically without any intention of retrying. "Let's punt the movie tonight." "I was going to hack all night to get this featu...
Purple Book => n. The `System V Interface Definition'. The covers of the first editions were an amazingly nauseating shade of off-lavender. See also {{book titles}}.
push => [from the operation that puts the current information on a stack, and the fact that procedure return addresses are saved on a stack] Also PUSH /push/ or PUSHJ /push'J/ (the latter based on the PDP-10 procedure call instruction). 1. To put som...
quadruple bucky => n., obs. 1. On an MIT {space-cadet keyboard}, use of all four of the shifting keys (control, meta, hyper, and super) while typing a character key. 2. On a Stanford or MIT keyboard in {raw mode}, use of four shift keys while typing ...
quadruple bucky2 => shift keys are the control and meta keys on *both* sides of the keyboard. This was very difficult to do! One accepted technique was to press the left-control and left-meta keys with your left hand, the right-control and right-meta...
quadruple bucky3 => fifth key with your nose. Quadruple-bucky combinations were very seldom used in practice, because when one invented a new command one usually assigned it to some character that was easier to type. If you want to imply that a progr...
quadruple bucky4 => or features, you can say something like "Oh, the command that makes it spin the tapes while whistling Beethoven's Fifth Symphony is quadruple-bucky-cokebottle." See {double bucky}, {bucky bits}, cokebottle.
quantifiers => In techspeak and jargon, the standard metric prefixes used in the SI (Syst`eme International) conventions for scientific measurement have dual uses. With units of time or things that come in powers of 10, such as money, they retain the...
quantum bogodynamics => /kwon'tm boh`goh-di-nam'iks/ n. A theory that characterizes the universe in terms of bogon sources (such as politicians, used-car salesmen, TV evangelists, and suits in general), bogon sinks (such as taxpayers and computers), ...
quantum bogodynamics2 => Bogon absorption, of course, causes human beings to behave mindlessly and machines to fail (and may also cause both to emit secondary bogons); however, the precise mechanics of the bogon-computron interaction are not yet unde...
quantum bogodynamics3 => Quantum bogodynamics is most often invoked to explain the sharp increase in hardware and software failures in the presence of suits; the latter emit bogons, which the former absorb. See bogon, computron, suit, psyton.
quarter => n. Two bits. This in turn comes from the `pieces of eight' famed in pirate movies --- Spanish gold pieces that could be broken into eight pie-slice-shaped `bits' to make change. Early in American history the Spanish coin was considered equ...
ques => /kwes/ 1. n. The question mark character (`?', ASCII 0111111). 2. interj. What? Also frequently verb-doubled as "Ques ques?" See wall.
quick-and-dirty => adj. Describes a crock put together under time or user pressure. Used esp. when you want to convey that you think the fast way might lead to trouble further down the road. "I can have a quick-and-dirty fix in place tonight, but I'l...
quote chapter and verse => [by analogy with the mainstream phrase] v. To reproduce a relevant excerpt from an appropriate bible. "I don't care if `rn' gets it wrong; `Followup-To poster' is explicitly permitted by RFC-1036. I'll quote chapter and ver...
quotient => n. See coefficient.
quux => /kwuhks/ Mythically, from the Latin semi-deponent verb quuxo, quuxare, quuxandum iri; noun form variously `quux' (plural `quuces', anglicized to `quuxes') and `quuxu' (genitive plural is `quuxuum', for four u-letters out of seven in all, usin...
qux => /kwuhks/ The fourth of the standard metasyntactic variables, after baz and before the quu(u...)x series. See foo, bar, baz, quux. This appears to be a recent mutation from quux, and many versions of the standard series just run foo, bar, baz, ...
factpacks/jargon.fact view on Meta::CPAN
winkey => n. (alt. `winkey face') See emoticon.
winnage => /win'*j/ n. The situation when a lossage is corrected, or when something is winning.
winner => 1. n. An unexpectedly good situation, program, programmer, or person. "So it turned out I could use a lexer generator instead of hand-coding my own pattern recognizer. What a win!" 2. `real winner' Often sarcastic, but also used as high pra...
winnitude => /win'*-t[y]ood/ n. The quality of winning (as opposed to winnage, which is the result of winning). "Guess what? They tweaked the microcode and now the LISP interpreter runs twice as fast as it used to." "That's really great! Boy, what wi...
wired => n. See hardwired.
wirehead => /wir'hed/ n. [prob. from SF slang for an electrical-brain-stimulation addict] 1. A hardware hacker, especially one who concentrates on communications hardware. 2. An expert in local-area networks. A wirehead can be a network software wiza...
wish list => n. A list of desired features or bug fixes that probably won't get done for a long time, usually because the person responsible for the code is too busy or can't think of a clean way to do it. "OK, I'll add automatic filename completion ...
wish list2 => interface." Compare {tick-list features}.
within delta of => adj. See delta.
within epsilon of => adj. See epsilon.
wizard => n. 1. A person who knows how a complex piece of software or hardware works (that is, who groks it); esp. someone who can find and fix bugs quickly in an emergency. Someone is a hacker if he or she has general hacking ability, but is a wizar...
Wizard Book => n. Hal Abelson and Jerry Sussman's `Structure and Interpretation of Computer Programs' (MIT Press, 1984; ISBN 0-262-01077-1, an excellent computer science text used in introductory courses at MIT. So called because of the wizard on the...
Wizard Book2 => LISP/Scheme world.
wizard mode => [from rogue] n. A special access mode of a program or system, usually passworded, that permits some users godlike privileges. Generally not used for operating systems themselves (`root mode' or `wheel mode' would be used instead).
wizardly => adj. Pertaining to wizards. A wizardly feature is one that only a wizard could understand or use properly.
womb box => n. 1. [TMRC] Storage space for equipment. 2. [proposed] A variety of hard-shell equipment case with heavy interior padding and/or shaped carrier cutouts in a foam-rubber matrix; mundanely called a `flight case'. Used for delicate test equ...
WOMBAT => [Waste Of Money, Brains, And Time] adj. Applied to problems which are both profoundly uninteresting in themselves and unlikely to benefit anyone interesting even if solved. Often used in fanciful constructions such as `wrestling with a womb...
wonky => /wong'kee/ [from Australian slang] adj. Yet another approximate synonym for broken. Specifically connotes a malfunction that produces behavior seen as crazy, humorous, or amusingly perverse. "That was the day the printer's font logic went wo...
workaround => n. A temporary kluge inserted in a system under development or test in order to avoid the effects of a bug or misfeature so that work can continue. Theoretically, workarounds are always replaced by fixes; in practice, customers often fi...
working as designed => [IBM] adj. 1. In conformance to a wrong or inappropriate specification; useful, but misdesigned. 2. Frequently used as a sardonic comment on a program's utility. 3. Unfortunately also used as a bogus reason for not accepting a ...
working as designed2 => this sense is used in official documents! See BAD.
worm => [from `tapeworm' in John Brunner's novel `The Shockwave Rider', via XEROX PARC] n. A program that propagates itself over a network, reproducing itself as it goes. Compare virus. Nowadays the term has negative connotations, as it is assumed th...
wound around the axle => adj. In an infinite loop. Often used by older computer types.
wrap around => vi. (also n. `wraparound' and v. shorthand `wrap') 1. [techspeak] The action of a counter that starts over at zero or at `minus infinity' (see infinity) after its maximum value has been reached, and continues incrementing, either becau...
wrap around2 => because of an overflow (as when a car's odometer starts over at 0). 2. To change phase gradually and continuously by maintaining a steady wake-sleep cycle somewhat longer than 24 hours, e.g., living six long (28-hour) days in a week (...
wrap around3 => rate of 10 microhertz).
write-only code => [a play on `read-only memory'] n. Code so arcane, complex, or ill-structured that it cannot be modified or even comprehended by anyone but its author, and possibly not even by him/her. A {Bad Thing}.
write-only language => n. A language with syntax (or semantics) sufficiently dense and bizarre that any routine of significant size is {write-only code}. A sobriquet applied occasionally to C and often to APL, though INTERCAL and TECO certainly deser...
write-only memory => n. The obvious antonym to `read-only memory'. Out of frustration with the long and seemingly useless chain of approvals required of component specifications, during which no actual checking seemed to occur, an engineer at Signeti...
write-only memory2 => a write-only memory and included it with a bunch of other specifications to be approved. This inclusion came to the attention of Signetics management only when regular customers started calling and asking for pricing information...
write-only memory3 => edition of the data book and requested the return of the `erroneous' ones. Later, around 1974, Signetics bought a double-page spread in `Electronics' magazine's April issue and used the spec as an April Fools' Day joke. Instead ...
write-only memory4 => characteristic curves, the 25120 "fully encoded, 9046 x N, Random Access, write-only-memory" data sheet included diagrams of "bit capacity vs. Temp.", "Iff vs. Vff", "Number of pins remaining vs. number of socket insertions", an...
write-only memory5 => required a 6.3 VAC VFF supply, a +10V VCC, and VDD of 0V, +/- 2%.
Wrong Thing => n. A design, action, or decision that is clearly incorrect or inappropriate. Often capitalized; always emphasized in speech as if capitalized. The opposite of the {Right Thing}; more generally, anything that is not the Right Thing. In ...
Wrong Thing2 => of the best', the merely good --- although good --- is nevertheless the Wrong Thing. "In C, the default is for module-level declarations to be visible everywhere, rather than just within the module. This is clearly the Wrong Thing."
wugga wugga => /wuh'g* wuh'g*/ n. Imaginary sound that a computer program makes as it labors with a tedious or difficult task. Compare {cruncha cruncha cruncha}, grind (sense 4).
WYSIWYG => /wiz'ee-wig/ adj. Describes a user interface under which "What You See Is What You Get", as opposed to one that uses more-or-less obscure commands which do not result in immediate visual feedback. The term can be mildly derogatory, as it i...
XOFF => /X'of/ n. Syn. control-s.
xor => /X'or/, /kzor/ conj. Exclusive or. `A xor B' means `A or B, but not both'. "I want to get cherry pie xor a banana split." This derives from the technical use of the term as a function on truth-values that is true if exactly one of its two argu...
xref => /X'ref/ vt., n. Hackish standard abbreviation for `cross-reference'.
XXX => /X-X-X/ n. A marker that attention is needed. Commonly used in program comments to indicate areas that are kluged up or need to be. Some hackers liken `XXX' to the notional heavy-porn movie rating.
xyzzy => /X-Y-Z-Z-Y/, /X-Y-ziz'ee/, /ziz'ee/, or /ik-ziz'ee/ [from the ADVENT game] adj. The canonical `magic word'. This comes from ADVENT, in which the idea is to explore an underground cave with many rooms and to collect the treasures you find the...
YA- => [Yet Another] abbrev. In hackish acronyms this almost invariably expands to {Yet Another}, following the precedent set by UNIX `yacc(1)'. See YABA.
YABA => /ya'b*/ [Cambridge] n. Yet Another Bloody Acronym. Whenever some program is being named, someone invariably suggests that it be given a name that is acronymic. The response from those with a trace of originality is to remark ironically that t...
YAUN => /yawn/ [Acronym for `Yet Another UNIX Nerd'] n. Reported from the San Diego Computer Society (predominantly a microcomputer users' group) as a good-natured punning insult aimed at UNIX zealots.
Yellow Book => [proposed] n. The print version of this Jargon File; `The New Hacker's Dictionary', forthcoming from MIT Press, 1991. Includes all the material in the File, plus a Foreword by Guy L. Steele and a Preface by Eric S. Raymond. Most import...
Yellow Book2 => typeset and includes almost all of the infamous Crunchly cartoons by the Great Quux, each attached to an appropriate entry.
Yet Another => adj. [From UNIX's `yacc(1)', `Yet Another Compiler- Compiler', a LALR parser generator] 1. Of your own work A humorous allusion often used in titles to acknowledge that the topic is not original, though the content is. As in `Yet Anoth...
Yet Another2 => Simulated Annealing Algorithm'. 2. Of others' work Describes something of which there are far too many. See also YA-, YABA, YAUN.
You are not expected to understand this => cav. [UNIX] The canonical comment describing something magic or too complicated to bother explaining properly. From an infamous comment in the context-switching code of the V6 UNIX kernel.
You know you've been hacking too long when... => The set-up line for a genre of one-liners told by hackers about themselves. These include the following * not only do you check your email more often than your paper mail, but you remember your {networ...
You know you've been hacking too long when...2 => postal one. * your SO kisses you on the neck and the first thing you think is "Uh, oh, {priority interrupt}." * you go to balance your checkbook and discover that you're doing it in octal. * your comp...
You know you've been hacking too long when...3 => value than your car. * in your universe, `round numbers' are powers of 2, not 10. * more than once, you have woken up recalling a dream in some programming language. * you realize you have never seen ...
You know you've been hacking too long when...4 => early version of this entry said "All but one of these have been reliably reported as hacker traits (some of them quite often). Even hackers may have trouble spotting the ringer." The ringer was balan...
You know you've been hacking too long when...5 => made up out of whole cloth. Although more respondents picked that one out as fiction than any of the others, I also received multiple independent reports of its actually happening. --- ESR]
Your mileage may vary => cav. [from the standard disclaimer attached to EPA mileage ratings by American car manufacturers] 1. A ritual warning often found in UNIX freeware distributions. Translates roughly as "Hey, I tried to write this portably, but...
Your mileage may vary2 => system?" 2. A qualifier more generally attached to advice. "I find that sending flowers works well, but your mileage may vary."
Yow! => /yow/ [from "Zippy the Pinhead" comix] interj. A favored hacker expression of humorous surprise or emphasis. "Yow! Check out what happens when you twiddle the foo option on this display hack!" Compare gurfle.
yoyo mode => n. The state in which the system is said to be when it rapidly alternates several times between being up and being down. Interestingly (and perhaps not by coincidence), many hardware vendors give out free yoyos at Usenix exhibits. Sun Mi...
yoyo mode2 => SIGPLAN '88. Tourists staying at one of Atlanta's most respectable hotels were subsequently treated to the sight of 200 of the country's top computer scientists testing yo-yo algorithms in the lobby.
Yu-Shiang Whole Fish => /yoo-shyang hohl fish/ n. obs. The character gamma (extended SAIL ASCII 0001001), which with a loop in its tail looks like a little fish swimming down the page. The term is actually the name of a Chinese dish in which a fish i...
Yu-Shiang Whole Fish2 => covered with Yu-Shiang (or Yu-Hsiang) sauce. Usage primarily by people on the MIT LISP Machine, which could display this character on the screen. Tends to elicit incredulity from people who hear about it second-hand.
zap => 1. n. Spiciness. 2. vt. To make food spicy. 3. vt. To make someone `suffer' by making his food spicy. (Most hackers love spicy food. Hot-and-sour soup is considered wimpy unless it makes you wipe your nose for the rest of the meal.) See zapped...
zapped => adj. Spicy. This term is used to distinguish between food that is hot (in temperature) and food that is *spicy*-hot. For example, the Chinese appetizer Bon Bon Chicken is a kind of chicken salad that is cold but zapped; by contrast, vanilla...
zen => vt. To figure out something by meditation or by a sudden flash of enlightenment. Originally applied to bugs, but occasionally applied to problems of life in general. "How'd you figure out the buffer allocation problem?" "Oh, I zenned it." Cont...
zero => vt. 1. To set to 0. Usually said of small pieces of data, such as bits or words (esp. in the construction `zero out'). 2. To erase; to discard all data from. Said of disks and directories, where `zeroing' need not involve actually writing zer...
zero-content => adj. Syn. content-free.
zeroth => /zee'rohth/ adj. First. Among software designers, comes from C's and LISP's 0-based indexing of arrays. Hardware people also tend to start counting at 0 instead of 1; this is natural since, e.g., the 256 states of 8 bits correspond to the b...
zigamorph => /zig'*-morf/ n. Hex FF (11111111) when used as a delimiter or fence character. Usage primarily at IBM shops.
zip => [primarily MS-DOS] vt. To create a compressed archive from a group of files using PKWare's PKZIP or a compatible archiver. Its use is spreading now that portable implementations of the algorithm have been written. Commonly used as follows "I'l...
zipperhead => [IBM] n. A person with a closed mind.
zombie => [UNIX] n. A process that has died but has not yet relinquished its process table slot (because the parent process hasn't executed a `wait(2)' for it yet). These can be seen in `ps(1)' listings occasionally. Compare orphan.
zorch => /zorch/ 1. [TMRC] v. To attack with an inverse heat sink. 2. [TMRC] v. To travel, with v approaching c [that is, with velocity approaching lightspeed --- ESR]. 3. [MIT] v. To propel something very quickly. "The new comm software is very fast...
Zork => /zork/ n. The second of the great early experiments in computer fantasy gaming; see ADVENT. Originally written on MIT-DM during the late 1970s, later distributed with BSD UNIX and commercialized as `The Zork Trilogy' by Infocom.
zorkmid => /zork'mid/ n. The canonical unit of currency in hacker-written games. This originated in zork but has spread to nethack and is referred to in several other games.= [^A-Za-z] (see regexp) =
'Snooze => /snooz/ [FidoNet] n. Fidonews, the weekly official on-line newsletter of FidoNet. As the editorial policy of Fidonews is "anything that arrives, we print", there are often large articles completely unrelated to FidoNet, which in turn tend ...
(TM) => // [USENET] ASCII rendition of the trademark-superscript symbol appended to phrases that the author feels should be recorded for posterity, perhaps in future editions of this lexicon. Sometimes used ironically as a form of protest against the...
-oid => [from `android'] suff. 1. This suffix is used as in mainstream English to indicate a poor imitation, a counterfeit, or some otherwise slightly bogus resemblance. Hackers will happily use it with all sorts of non-Greco/Latin stem words that wo...
-ware => [from `software'] suff. Commonly used to form jargon terms for classes of software. For examples, see careware, crippleware, crudware, freeware, fritterware, guiltware, liveware, meatware, payware, psychedelicware, shareware, shelfware, vapo...
/dev/null => /dev-nuhl/ [from the UNIX null device, used as a data sink] n. A notional `black hole' in any information space being discussed, used, or referred to. A controversial posting, for example, might end "Kudos to rasputin@kremlin.org, flames...
120 reset => /wuhn-twen'tee ree'set/ [from 120 volts, U.S. wall voltage] n. To cycle power on a machine in order to reset or unjam it. Compare {Big Red Switch}, {power cycle}.
2 => infix. In translation software written by hackers, infix 2 often represents the syllable *to* with the connotation `translate to' as in dvi2ps (DVI to PostScript), int2string (integer to string), and texi2roff (Texinfo to [nt]roff).
@-party => /at'par`tee/ [from the @-sign in an Internet address] n. (alt. `@-sign party' /at'sin par`tee/) A semi-closed party thrown for hackers at a science-fiction convention (esp. the annual Worldcon); one must have a {network address} to get in,...
@Begin => // See \begin.
\begin => // [from the LaTeX command] With \end, used humorously in writing to indicate a context or to remark on the surrounded text. For example \beginflame Predicate logic is the only good programming language. Anyone who would use anything else i...
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