Amethyst
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pdl3 is eyes won't focus beyond 2 feet."
PDP-10 is [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 ...
PDP-102 is the instruction set (most notably the bit-field instructions) are still considered unsurpassed. The 10 was eventually eclipsed by the VAX machines (descendants of the PDP-11) when DEC recognized that the 10 and VAX product lines we...
PDP-103 is concentrate its software development effort on the more profitable VAX. The machine was finally dropped from DEC's line in 1983, following the failure of the Jupiter Project at DEC to build a viable new model. (Some attempts by o...
PDP-104 is nothing; see {Foonly}) This event spelled the doom of {{ITS}} and the technical cultures that had spawned the original Jargon File, but by mid-1991 it had become something of a badge of honorable old-timerhood among hackers to hav...
PDP-105 is {{TOPS-10}}, {{ITS}}, {AOS}, {BLT}, {DDT}, {DPB}, {EXCH}, {HAKMEM}, {JFCL}, {LDB}, {pop}, {push}, appendix A.
PDP-20 is 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 lab...
PDP-202 is being the result of a lawsuit brought against DEC by Singer, which once made a computer called `system-10'), but contrary to popular lore there was never a `PDP-20'; the only difference between a 10 and a 20 was the operating syst...
PDP-203 is all) machines sold to run TOPS-10 were painted `Basil Blue', whereas most TOPS-20 machines were painted `Chinese Red' (often mistakenly called orange).
peek is 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 ...
peek2 is {peek}ing around memory, more or less at random, to find the location where the system keeps interesting stuff. Long (and variably accurate) lists of such addresses for various computers circulate (see {{interrupt list, the}}). Th...
peek3 is highly useful, mildly amusing, useless but neat, or (most likely) total {lossage} (see {killer poke}).
pencil and paper is 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 w...
pencil and paper2 is 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 h...
pencil and paper3 is 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 append...
peon is 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 is /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 is /perf/ n. See {chad} (sense 1). The term `perfory' /per'f*-ree/ is also heard.
perfect programmer syndrome is 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 per...
perfect programmer syndrome2 is 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 is /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. Su...
Perl2 is hairier (see {awk}). UNIX sysadmins, who are almost always incorrigible hackers, increasingly consider it one of the {languages of choice}. Perl has been described, in a parody of a famous remark about `lex(1)', as the "Swiss-Army...
pessimal is /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', b...
pessimal2 is most English dictionaries, although `pessimize' is listed in the OED.
pessimizing compiler is /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 ...
pessimizing compiler2 is excessive cleverness is doing the opposite. A few pessimizing compilers have been written on purpose, however, as pranks or burlesques.
peta- is /pe't*/ [SI] pref. See {{quantifiers}}.
PETSCII is /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 m...
PETSCII2 is and up-arrow (as in old-style ASCII) instead of underscore and caret, placed the unshifted alphabet at positions 65--90, put the shifted alphabet at positions 193--218, and added graphics characters.
phase is 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 ph...
phase2 is regular basis. "What's your phase?" "I've been getting in about 8 P.M. lately, but I'm going to {wrap around} to the day schedule by Friday." A person who is roughly 12 hours out of phase is sometimes said to be in `night mode'. ...
phase3 is frequently) used, meaning you're working 9 to 5 (or, more likely, 10 to 6).) The act of altering one's cycle is called `changing phase'; `phase shifting' has also been recently reported from Caltech. 2. `change phase the hard way'...
phase4 is to get into a different phase. 3. `change phase the easy way' To stay asleep, etc. However, some claim that either staying awake longer or sleeping longer is easy, and that it is *shortening* your day or night that's hard (see {wra...
phase5 is travelers who cross many time-zone boundaries may be attributed to two distinct causes the strain of travel per se, and the strain of changing phase. Hackers who suddenly find that they must change phase drastically in a short per...
phase6 is experience something very like jet lag without traveling.
phase of the moon is 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 dete...
phase of the moon2 is 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 ...
phase of the moon3 is 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 t...
phase of the moon4 is 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 specificatio...
phase of the moon5 is 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. Th...
phreaking is [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 co...
phreaking2 is phreaking was a semi-respectable activity among hackers; there was a gentleman's agreement that phreaking as an intellectual game and a form of exploration was OK, but serious theft of services was taboo. There was significant c...
phreaking3 is hard-core phone phreaks who ran semi-underground networks of their own through such media as the legendary `TAP Newsletter'. This ethos began to break down in the mid-1980s as wider dissemination of the techniques put them in ...
phreaking4 is the same time, changes in the phone network made old-style technical ingenuity less effective as a way of hacking it, so phreaking came to depend more on overtly criminal acts such as stealing phone-card numbers. The crimes an...
phreaking5 is turned that game very ugly. A few old-time hackers still phreak casually just to keep their hand in, but most these days have hardly even heard of `blue boxes' or any of the other paraphernalia of the great phreaks of yore.
pico- is [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 recog...
pico-2 is {{quantifiers}}, {micro-}.
run like a pig is v. To run very slowly on given hardware, said of software. Distinct from {hog}.
pilot error is [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 ...
ping is [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 ...
ping2 is a phone greeting. See {ACK}, also {ENQ}. 2. vt. To verify the presence of. 3. vt. To get the attention of. From the UNIX command `ping(1)' that sends an ICMP ECHO packet to another host. 4. vt. To send a message to all members ...
ping3 is order to verify that everybody's addresses are reachable). "We haven't heard much of anything from Geoff, but he did respond with an ACK both times I pinged jargon-friends." The funniest use of `ping' to date was described in Janua...
ping4 is comp.sys.next. He was trying to isolate a faulty cable segment on a TCP/IP Ethernet hooked up to a NeXT machine, and got tired of having to run back to his console after each cabling tweak to see if the ping packets were getting th...
ping5 is on the NeXT, then wrote a script that repeatedly invoked `ping(8)', listened for an echo, and played back the recording on each returned packet. Result? A program that caused the machine to repeat, over and over, "Ping ... ping ......
ping6 is turned the volume to maximum, ferreted through the building with one ear cocked, and found a faulty tee connector in no time.
Pink-Shirt Book is `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...
Pink-Shirt Book2 is pink shirt. See also {{book titles}}.
PIP is /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 ...
PIP2 is that when the program was originated, during the development of the PDP-6 in 1963, it was called ATLATL (`Anything, Lord, to Anything, Lord').
pistol is [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 is [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 ...
pizza box2 is 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 is /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}; comp...
plain-ASCII is /playn-as'kee/ Syn. {flat-ASCII}.
plan file is [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 locatio...
plan file2 is almost universally to humorous and self-expressive purposes (like a {sig block}). See {Hacking X for Y}.
platinum-iridium is 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...
platinum-iridium2 is Weights and Measures near Paris. (From 1889 to 1960, the meter was defined to be the distance between two scratches in a platinum-iridium bar kept in that vault --- this replaced an earlier definition as 10^7 times the di...
platinum-iridium3 is along a meridian through Paris; unfortunately, this had been based on an inexact value of the circumference of the Earth. From 1960 to 1984 it was defined to be 1650763.73 wavelengths of the orange-red line of krypton-86 ...
platinum-iridium4 is as the length of the path traveled by light in a vacuum in the time interval of 1/299,792,458 of a second. The kilogram is now the only unit of measure officially defined in terms of a unique artifact.) "This garbage-c...
platinum-iridium5 is platinum-iridium cons cell in Paris." Compare {golden}.
playpen is [IBM] n. A room where programmers work. Compare {salt mines}.
playte is /playt/ 16 bits, by analogy with {nybble} and {{byte}}. Usage rare and extremely silly. See also {dynner} and {crumb}.
plingnet is /pling'net/ n. Syn. {UUCPNET}. Also see {{Commonwealth Hackish}}, which uses `pling' for {bang} (as in {bang path}).
plokta is /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...
plokta2 is Plokta can also be used while trying to figure out any unknown key sequence for a particular operation. Someone going into `plokta mode' usually places both hands flat on the keyboard and presses down, hoping for some useful resp...
plonk is [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*...
plugh is /ploogh/ [from the {ADVENT} game] v. See {xyzzy}.
plumbing is [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 ...
plumbing2 is temp-file grinding encapsulated in a shell script; this is much less effort than writing C every time, and the capability is considered one of UNIX's major winning features. Esp. used in the construction `hairy plumbing' (see {...
plumbing3 is spell-checker out of `sort(1)', `comm(1)', and `tr(1)' with a little plumbing." See also {tee}.
PM is /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 {provocati...
pnambic is /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 func...
pnambic2 is implementation or to the complexity of the system, requires human interaction to simulate or replace some or all of the actions, inputs, or outputs of the process or function. 2. Of or pertaining to a process or function whose a...
pnambic3 is falsified. 3. Requiring {prestidigitization}. The ultimate pnambic product was "Dan Bricklin's Demo", a program which supported flashy user-interface design prototyping. There is a related maxim among hackers "Any sufficiently ...
pnambic4 is a rigged demo." See {magic}, sense 1, for illumination of this point.
pod is [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 is n.,vt. See {peek}.
poll is 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 n...
poll2 is out." 3. To ask. "Lunch? I poll for a takeout order daily."
polygon pusher is 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 is /P-O-M/ n. Common acronym for {phase of the moon}. Usage usually in the phrase `POM-dependent', which means {flaky}.
pop is [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 po...
pop2 is he/she has finally finished working on it and can now remove it from the list of things hanging overhead. 2. When a discussion gets to too deep a level of detail so that the main point of the discussion is being lost, someone will s...
pop3 is level!" The shout is frequently accompanied by an upthrust arm with a finger pointing to the ceiling.
POPJ is /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 is 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 induc...
posing2 is example, if one's character name is Firechild, one might type ` looks delighted at the idea and begins hacking on the nearest terminal' to broadcast a message that says "Firechild looks delighted at the idea and begins hacking on ...
post is 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 is 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 ...
posting2 is perhaps the best dividing line is that if you don't know the names of all the potential recipients, it is a posting.
postmaster is 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 t...
pound on is vt. Syn. {bang on}.
power cycle is 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 {gronk}ed state. Syn. {120 reset}; see also {Big Red Switch}. Compare {V...
power cycle2 is see the AI Koan in appendix A about Tom Knight and the novice.
PPN is /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 ...
precedence lossage is /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 nonintuitivel...
precedence lossage2 is `<<', 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}...
precedence lossage3 is 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 is /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 ...
prepend2 is translation routine will pass it through unaltered."
prestidigitization is /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 is 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 {mana...
prettyprint is /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 {grind}ing (sense 2) LISP code. 2. To format in some particularly slick...
pretzel key is [Mac users] n. See {command key}.
prime time is [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 is [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 i...
priority interrupt2 is in the near vicinity. Also called an {NMI} (non-maskable interrupt), especially in PC-land.
profile is 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....
profile2 is time spent in each routine of a program, used to find and {tune} away the {hot spot}s in it. This sense is often verbed. Some profiling modes report units other than time (such as call counts) and/or report at granularities other...
proglet is /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...
factpacks/jargon-split.fact view on Meta::CPAN
quantifiers7 is prefix; thus "2K dollars". This is also true (though less commonly) of G and M. Note that the formal SI metric prefix for 1000 is `k'; some use this strictly, reserving `K' for multiplication by 1024 (KB is `kilobytes'). K...
quantifiers8 is bytes; thus, 64G is 64 gigabytes and `a K' is a kilobyte (compare mainstream use of `a G' as short for `a grand', that is, $1000). Whether one pronounces `gig' with hard or soft `g' depends on what one thinks the proper pron...
quantifiers9 is 1024 (or other powers of 2 and 10 close in magnitude) --- for example, describing a memory in units of 500K or 524K instead of 512K --- is a sure sign of the {marketroid}.
quantum bogodynamics is /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 {suit}s in general), bogon sinks (such as taxpayers and com...
quantum bogodynamics2 is 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 y...
quantum bogodynamics3 is 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}, ...
quarter is 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 consi...
quarter2 is `bits' was considered worth 12.5 cents. Syn. {tayste}, {crumb}, {quad}. Usage rare. See also {nickle}, {nybble}, {{byte}}, {dynner}.
ques is /kwes/ 1. n. The question mark character (`?', ASCII 0111111). 2. interj. What? Also frequently verb-doubled as "Ques ques?" See {wall}.
quick-and-dirty is 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 tonig...
quick-and-dirty2 is module to solve the underlying design problem." See also {kluge}.
quote chapter and verse is [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 chap...
quotient is n. See {coefficient}.
quux is /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 al...
quux2 is Scrabble).] 1. Originally, a metasyntactic variable like {foo} and {foobar}. Invented by Guy Steele for precisely this purpose when he was young and na"ive and not yet interacting with the real computing community. Many people in...
quux3 is been lucky enough to have spread a little. In an eloquent display of poetic justice, it has returned to the originator in the form of a nickname. 2. interj. See {foo}; however, denotes very little disgust, and is uttered mostly fo...
quux4 is in his persona as `The Great Quux', which is somewhat infamous for light verse and for the `Crunchly' cartoons. 4. In some circles, quux is used as a punning opposite of `crux'. "Ah, that's the quux of the matter!" implies that the ...
quux5 is ice-cube}). 5. quuxy adj. Of or pertaining to a quux.
qux is /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 j...
QWERTY is /kwer'tee/ [from the keycaps at the upper left] adj. Pertaining to a standard English-language typewriter keyboard (sometimes called the Sholes keyboard after its inventor), as opposed to Dvorak or foreign-language layouts or a {spac...
QWERTY2 is Historical note The QWERTY layout is a fine example of a {fossil}. It is sometimes said that it was designed to slow down the typist, but this is wrong; it was designed to allow *faster* typing --- under a constraint now long obsole...
QWERTY3 is nearby type-bars jammed the mechanism. So Sholes fiddled the layout to separate the letters of many common digraphs (he did a far from perfect job, though; `th', `tr', `ed', and `er', for example, each use two nearby keys). Also, ...
QWERTY4 is line allowed it to be typed with particular speed and accuracy for {demo}s. The jamming problem was essentially solved soon afterward by a suitable use of springs, but the keyboard layout lives on.*rain dance n. 1. Any ceremonial a...
QWERTY5 is with the expectation that nothing will be accomplished. This especially applies to reseating printed circuit boards, reconnecting cables, etc. "I can't boot up the machine. We'll have to wait for Greg to do his rain dance." 2. An...
QWERTY6 is computers or software in order to achieve some goal; the term is usually restricted to rituals that include both an {incantation} or two and physical activity or motion. Compare {magic}, {voodoo programming}, {black art}.
random is adj. 1. Unpredictable (closest to mathematical definition); weird. "The system's been behaving pretty randomly." 2. Assorted; undistinguished. "Who was at the conference?" "Just a bunch of random business types." 3. (pejorative...
random2 is just a random loser." 4. Incoherent or inelegant; poorly chosen; not well organized. "The program has a random set of misfeatures." "That's a random name for that function." "Well, all the names were chosen pretty randomly." 5...
random3 is deterministic. "The I/O channels are in a pool, and when a file is opened one is chosen randomly." 6. Arbitrary. "It generates a random name for the scratch file." 7. Gratuitously wrong, i.e., poorly done and for no good apparen...
random4 is handles file name defaulting in a particularly useless way, or an assembler routine that could easily have been coded using only three registers, but redundantly uses seven for values with non-overlapping lifetimes, so that no one e...
random5 is extra registers. What {randomness}! 8. n. A random hacker; used particularly of high-school students who soak up computer time and generally get in the way. 9. n. Anyone who is not a hacker (or, sometimes, anyone not known to the ...
random6 is "I went to the talk, but the audience was full of randoms asking bogus questions". 10. n. (occasional MIT usage) One who lives at Random Hall. See also {J. Random}, {some random X}.
random numbers is n. When one wishes to specify a large but random number of things, and the context is inappropriate for {N}, certain numbers are preferred by hacker tradition (that is, easily recognized as placeholders). These include the f...
random numbers2 is as `the least random number'; see 23. 23 Sacred number of Eris, Goddess of Discord (along with 17 and 5). 42 The Answer to the Ultimate Question of Life, the Universe, and Everything. (Note that ...
random numbers3 is 69 From the sexual act. This one was favored in MIT's ITS culture. 105 69 hex = 105 decimal, and 69 decimal = 105 octal. 666 The Number of the Beast. For further enlightenment, consult the `Pr...
random numbers4 is to the Galaxy', `The Joy of Sex', and the Christian Bible (Revelation 138). See also {Discordianism} or consult your pineal gland. One common rhetorical maneuver uses any of the canonical random numbers as placeholders fo...
random numbers5 is arguments, for arbitrary values of 42." "There are 69 ways to leave your lover, for 69 = 50." This is especially likely when the speaker has uttered a random number and realizes that it was not recognized as such, but even ...
random numbers6 is this fashion. A related joke is that pi equals 3 --- for small values of pi and large values of 3.
randomness is n. An inexplicable misfeature; gratuitous inelegance. Also, a {hack} or {crock} that depends on a complex combination of coincidences (or, possibly, the combination upon which the crock depends for its accidental failure to malfu...
randomness2 is 40--57 by putting the character in the four-bit accumulator field of an XCT and then extracting six bits --- the low 2 bits of the XCT opcode are the right thing." "What randomness!"
rape is vt. 1. To {screw} someone or something, violently; in particular, to destroy a program or information irrecoverably. Often used in describing file-system damage. "So-and-so was running a program that did absolute disk I/O and ended up...
rape2 is a piece of hardware for parts.
rare mode is [UNIX] adj. CBREAK mode (character-by-character with interrupts enabled). Distinguished from {raw mode} and `cooked mode'; the phrase "a sort of half-cooked (rare?) mode" is used in the V7/BSD manuals to describe the mode. Usage...
raster blaster is n. [Cambridge] Specialized hardware for {bitblt} operations (a {blitter}). Allegedly inspired by `Rasta Blasta', British slang for the sort of portable stereo Americans call a `boom box' or `ghetto blaster'.
raster burn is n. Eyestrain brought on by too many hours of looking at low-res, poorly tuned, or glare-ridden monitors, esp. graphics monitors. See {terminal illness}.
rat belt is n. A cable tie, esp. the sawtoothed, self-locking plastic kind that you can remove only by cutting (as opposed to a random twist of wire or a twist tie or one of those humongous metal clip frobs). Small cable ties are `mouse belts...
rave is [WPI] vi. 1. To persist in discussing a specific subject. 2. To speak authoritatively on a subject about which one knows very little. 3. To complain to a person who is not in a position to correct the difficulty. 4. To purposely anno...
rave2 is evangelize. See {flame}. 6. Also used to describe a less negative form of blather, such as friendly bullshitting. `Rave' differs slightly from {flame} in that `rave' implies that it is the persistence or obliviousness of the pers...
rave3 is implies somewhat more strongly that the tone is offensive as well.
rave on! is imp. Sarcastic invitation to continue a {rave}, often by someone who wishes the raver would get a clue but realizes this is unlikely.
ravs is /ravz/, also `Chinese ravs' n. Jiao-zi (steamed or boiled) or Guo-tie (pan-fried). A Chinese appetizer, known variously in the plural as dumplings, pot stickers (the literal translation of guo-tie), and (around Boston) `Peking Ravioli...
ravs2 is which among hackers always means the Chinese kind rather than the Italian kind. Both consist of a filling in a pasta shell, but the Chinese kind includes no cheese, uses a thinner pasta, has a pork-vegetable filling (good ones incl...
ravs3 is either by steaming or frying. A rav or dumpling can be cooked any way, but a potsticker is always the fried kind (so called because it sticks to the frying pot and has to be scraped off). "Let's get hot-and-sour soup and three ord...
raw mode is n. A mode that allows a program to transfer bits directly to or from an I/O device without any processing, abstraction, or interpretation by the operating system. Compare {rare}. This is techspeak under UNIX, jargon elsewhere.
rc file is /R-C fil/ [UNIX from the startup script `/etc/rc', but this is commonly believed to have been named after older scripts to `run commands'] n. Script file containing startup instructions for an application program (or an entire ope...
rc file2 is commands of the sort that might have been invoked manually once the system was running but are to be executed automatically each time the system starts up. See also {dot file}.
RE is /R-E/ n. Common spoken and written shorthand for {regexp}.
read-only user is n. Describes a {luser} who uses computers almost exclusively for reading USENET, bulletin boards, and/or email, rather than writing code or purveying useful information. See {twink}, {terminal junkie}, {lurker}.
README file is n. By convention, the top-level directory of a UNIX source distribution always contains a file named `README' (or READ.ME, or rarely ReadMe or some other variant), which is a hacker's-eye introduction containing a pointer to mor...
README file2 is miscellaneous revision history notes, etc. When asked, hackers invariably relate this to the famous scene in Lewis Carroll's `Alice's Adventures In Wonderland' in which Alice confronts magic munchies labeled "Eat Me" and "Drink...
real estate is n. May be used for any critical resource measured in units of area. Most frequently used of `chip real estate', the area available for logic on the surface of an integrated circuit (see also {nanoacre}). May also be used of fl...
real estate2 is on a crowded desktop (whether physical or electronic).
real hack is n. A {crock}. This is sometimes used affectionately; see {hack}.
real operating system is n. The sort the speaker is used to. People from the academic community are likely to issue comments like "System V? Why don't you use a *real* operating system?", people from the commercial/industrial UNIX sector are...
real operating system2 is a *real* operating system?", and people from IBM object "UNIX? Why don't you use a *real* operating system?" See {holy wars}, {religious issues}, {proprietary}, {Get a real computer!}
real programmer is [indirectly, from the book `Real Men Don't Eat Quiche'] n. A particular sub-variety of hacker one possessed of a flippant attitude toward complexity that is arrogant even when justified by experience. The archetypal `real p...
real programmer2 is metal} and is very good at same, remembers the binary opcodes for every machine he has ever programmed, thinks that HLLs are sissy, and uses a debugger to edit his code because full-screen editors are for wimps. Real Pro...
real programmer3 is been {bum}med into a state of {tense}ness just short of rupture. Real Programmers never use comments or write documentation "If it was hard to write", says the Real Programmer, "it should be hard to understand." Real Pr...
real programmer4 is were never in their spec sheets; in fact, they are seldom really happy unless doing so. A Real Programmer's code can awe with its fiendish brilliance, even as its crockishness appalls. Real Programmers live on junk food a...
real programmer5 is walls, and terrify the crap out of other programmers --- because someday, somebody else might have to try to understand their code in order to change it. Their successors generally consider it a {Good Thing} that there are...
real programmer6 is For a famous (and somewhat more positive) portrait of a Real Programmer, see "The Story of Mel" in appendix A.
Real Soon Now is [orig. from SF's fanzine community, popularized by Jerry Pournelle's column in `BYTE'] adv. 1. Supposed to be available (or fixed, or cheap, or whatever) real soon now according to somebody, but the speaker is quite skeptical....
Real Soon Now2 is commitments permit one to get to it (in other words, don't hold your breath). Often abbreviated RSN.
real time is 1. [techspeak] adj. Describes an application which requires a program to respond to stimuli within some small upper limit of response time (typically milli- or microseconds). Process control at a chemical plant is the classic exa...
real time2 is special operating systems (because everything else must take a back seat to response time) and speed-tuned hardware. 2. adv. In jargon, refers to doing something while people are watching or waiting. "I asked her how to find the...
real time3 is stack and she came up with an algorithm in real time."
real user is n. 1. A commercial user. One who is paying *real* money for his computer usage. 2. A non-hacker. Someone using the system for an explicit purpose (a research project, a course, etc.) other than pure exploration. See {user}. H...
real user2 is real users. "I need this fixed so I can do a problem set. I'm not complaining out of randomness, but as a real user." See also {luser}.
Real World is n. 1. Those institutions at which `programming' may be used in the same sentence as `FORTRAN', `{COBOL}', `RPG', `{IBM}', `DBASE', etc. Places where programs do such commercially necessary but intellectually uninspiring things a...
Real World2 is 2. The location of non-programmers and activities not related to programming. 3. A bizarre dimension in which the standard dress is shirt and tie and in which a person's working hours are defined as 9 to 5 (see {code grinder}...
Real World3 is fellow, he's left MIT and gone into the Real World." Used pejoratively by those not in residence there. In conversation, talking of someone who has entered the Real World is not unlike speaking of a deceased person. See also ...
reality check is n. 1. The simplest kind of test of software or hardware; doing the equivalent of asking it what 2 + 2 is and seeing if you get 4. The software equivalent of a {smoke test}. 2. The act of letting a {real user} try out proto...
reaper is n. A {prowler} that {GFR}s files. A file removed in this way is said to have been `reaped'.
rectangle slinger is n. See {polygon pusher}.
recursion is n. See {recursion}. See also {tail recursion}.
recursive acronym is pl.n. A hackish (and especially MIT) tradition is to choose acronyms that refer humorously to themselves or to other acronyms. The classic examples were two MIT editors called EINE ("EINE Is Not EMACS") and ZWEI ("ZWEI Wa...
recursive acronym2 is a Scheme compiler called LIAR (Liar Imitates Apply Recursively), and {GNU} (q.v., sense 1) stands for "GNU's Not UNIX!" --- and a company with the name CYGNUS, which expands to "Cygnus, Your GNU Support". See also {mung...
Red Book is n. 1. Informal name for one of the three standard references on PostScript (`PostScript Language Reference Manual', Adobe Systems (Addison-Wesley, 1985; QA76.73.P67P67; ISBN 0-201-10174-2); the others are known as the {Green Book} ...
Red Book2 is one of the 3 standard references on Smalltalk (`Smalltalk-80 The Interactive Programming Environment' by Adele Goldberg (Addison-Wesley, 1984; QA76.8.S635G638; ISBN 0-201-11372-4); this too is associated with blue and green book...
Red Book3 is CCITT eighth plenary assembly. Until now, these have changed color each review cycle (1988 was {Blue Book}, 1992 will be {Green Book}); however, it is rumored that this convention is going to be dropped before 1992. These incl...
Red Book4 is and the Group 1 through 4 fax standards. 4. The new version of the {Green Book} (sense 4) --- IEEE 1003.1-1990, a.k.a ISO 9945-1 --- is (because of the color and the fact that it is printed on A4 paper) known in the U.S.A. as "th...
Red Book5 is and in Europe as "the Ugly Red Book That's A Sensible Size". 5. The NSA `Trusted Network Interpretation' companion to the {Orange Book}. See also {{book titles}}.
regexp is /reg'eksp/ [UNIX] n. (alt. `regex' or `reg-ex') 1. Common written and spoken abbreviation for `regular expression', one of the wildcard patterns used, e.g., by UNIX utilities such as `grep(1)', `sed(1)', and `awk(1)'. These use con...
regexp2 is those described under {glob}. For purposes of this lexicon, it is sufficient to note that regexps also allow complemented character sets using `^'; thus, one can specify `any non-alphabetic character' with `[^A-Za-z]'. 2. Name o...
regexp3 is portable C, written by revered USENETter Henry Spencer (henry@zoo.toronto.edu).
reinvent the wheel is v. To design or implement a tool equivalent to an existing one or part of one, with the implication that doing so is silly or a waste of time. This is often a valid criticism. On the other hand, automobiles don't use woo...
reinvent the wheel2 is be reinvented many times before you get them right. On the third hand, people reinventing the wheel do tend to come up with the moral equivalent of a trapezoid with an offset axle.
religious issues is n. Questions which seemingly cannot be raised without touching off {holy wars}, such as "What is the best operating system (or editor, language, architecture, shell, mail reader, news reader)?", "What about that Heinlein gu...
religious issues2 is Jargon File?" See {holy wars}; see also {theology}, {bigot}. This term is an example of {ha ha only serious}. People actually develop the most amazing and religiously intense attachments to their tools, even when the t...
religious issues3 is thing one can do when one stumbles into the crossfire is mumble {Get a life!} and leave --- unless, of course, one's *own* unassailably rational and obviously correct choices are being slammed.
replicator is n. Any construct that acts to produce copies of itself; this could be a living organism, an idea (see {meme}), a program (see {worm}, {wabbit}, and {virus}), a pattern in a cellular automaton (see {life}, sense 1), or (speculativ...
replicator2 is claimed by some that {{UNIX}} and {C} are the symbiotic halves of an extremely successful replicator; see {UNIX conspiracy}.
reply is n. See {followup}.
reset is [the MUD community] v. In AberMUD, to bring all dead mobiles to life and move items back to their initial starting places. New players who can't find anything shout "Reset! Reset!" quite a bit. Higher-level players shout back "No way!...
reset2 is found. Used in {RL}, it means to put things back to the way they were when you found them.
restriction is n. A {bug} or design error that limits a program's capabilities, and which is sufficiently egregious that nobody can quite work up enough nerve to describe it as a {feature}. Often used (esp. by {marketroid} types) to make it s...
restriction2 is been intended by the designers all along, or was forced upon them by arcane technical constraints of a nature no mere user could possibly comprehend (these claims are almost invariably false). Old-time hacker Joseph M. Newcom...
restriction3 is quantifiable but arbitrary restriction, you should make it either a power of 2 or a power of 2 minus 1. If you impose a limit of 17 items in a list, everyone will know it is a random number --- on the other hand, a limit of 15...
restriction4 is 0- or 1-based indexing in binary) and you will get less {flamage} for it. Limits which are round numbers in base 10 are always especially suspect.
retcon is /ret'kon/ [`retroactive continuity', from the USENET newsgroup rec.arts.comics] 1. n. The common situation in pulp fiction (esp. comics or soap operas) where a new story `reveals' things about events in previous stories, usually leav...
retcon2 is continuity) while completely changing their interpretation. E.g., revealing that a whole season of "Dallas" was a dream was a retcon. 2. vt. To write such a story about a character or fictitious object. "Byrne has retconned Sup...
retcon3 is unbreakable." "Marvelman's old adventures were retconned into synthetic dreams." "Swamp Thing was retconned from a transformed person into a sentient vegetable." [This is included because it is a good example of hackish linguisti...
retcon4 is to computers. The word `retcon' will probably spread through comics fandom and lose its association with hackerdom within a couple of years; for the record, it started here. --- ESR]
RETI is v. Syn. {RTI}
retrocomputing is /ret'-roh-k*m-pyoo'ting/ n. Refers to emulations of way-behind-the-state-of-the-art hardware or software, or implementations of never-was-state-of-the-art; esp. if such implementations are elaborate practical jokes and/or par...
retrocomputing2 is the most widely distributed retrocomputing utility was the `pnch(6)' or `bcd(6)' program on V7 and other early UNIX versions, which would accept up to 80 characters of text argument and display the corresponding pattern in...
retrocomputing3 is retrocomputing hacks have included the programming language {INTERCAL}, a {JCL}-emulating shell for UNIX, the card-punch-emulating editor named 029, and various elaborate PDP-11 hardware emulators and RT-11 OS emulators wr...
RFC is /R-F-C/ [Request For Comment] n. One of a long-established series of numbered Internet standards widely followed by commercial and PD software in the Internet and UNIX communities. Perhaps the single most influential one has been RFC-8...
RFC2 is RFCs are unusual in that they are floated by technical experts acting on their own initiative and reviewed by the Internet at large, rather than formally promulgated through an institution such as ANSI. For this reason, they remain ...
RFE is /R-F-E/ n. 1. [techspeak] Request For Enhancement. 2. [from `Radio Free Europe', Bellcore and Sun] Radio Free Ethernet, a system (originated by Peter Langston) for broadcasting audio among Sun SPARCstations over the ethernet.
rib site is [by analogy with {backbone site}] n. A machine that has an on-demand high-speed link to a {backbone site} and serves as a regional distribution point for lots of third-party traffic in email and USENET news. Compare {leaf site}, {...
rice box is [from ham radio slang] n. Any Asian-made commodity computer, esp. an 80x86-based machine built to IBM PC-compatible ISA or EISA-bus standards.
factpacks/jargon-split.fact view on Meta::CPAN
TECO3 is powerful programming-language-like features and its unspeakably hairy syntax. It is literally the case that every string of characters is a valid TECO program (though probably not a useful one); one common hacker game used to be ment...
TECO4 is corresponding to human names did. As an example of TECOs obscurity, here is a TECO program that takes a list of names such as Loser, J. Random Quux, The Great Dick, Moby sorts them alphabetically according to surname, and...
TECO5 is comma, to produce the following Moby Dick J. Random Loser The Great Quux The program is [1 J^P$L$$ J <.-Z; .,(S,$ -D .)FX1 @F^B $K L I $ G1 L>$$ (where ^B means `Control-B (ASCII 0000010) and $ is actually an {ALT}...
TECO6 is fact, this very program was used to produce the second, sorted list from the first list. The first hack at it had a {bug} GLS (the author) had accidentally omitted the `@ in front of `F^B, which as anyone can see is clearly the {Wron...
TECO7 is There is no space to describe all the features of TECO, but it may be of interest that `^P means `sort and `J<.-Z; ... L> is an idiomatic series of commands for `do once for every line. In mid-1991, TECO is pretty much one with the ...
TECO8 is affections of hackerdom by {EMACS}. Descendants of an early (and somewhat lobotomized) version adopted by DEC can still be found lurking on VMS and a couple of crufty PDP-11 operating systems, however, and ports of the more advanced ...
TECO9 is antiquarian interest. See also {retrocomputing}, {write-only language}.
tee is n.,vt. [Purdue] A carbon copy of an electronic transmission. "Oh, youre sending him the {bits} to that? Slap on a tee for me." From the UNIX command `tee(1), itself named after a pipe fitting (see {plumbing}). Can also mean `save one...
Telerat is /tel*-rat/ n. Unflattering hackerism for `Teleray, a line of extremely losing terminals. See also {terminak}, {sun-stools}, {HP-SUX}.
TELNET is /telnet/ vt. To communicate with another Internet host using the {TELNET} program. TOPS-10 people used the word IMPCOM, since that was the program name for them. Sometimes abbreviated to TN /T-N/. "I usually TN over to SAIL just t...
ten-finger interface is n. The interface between two networks that cannot be directly connected for security reasons; refers to the practice of placing two terminals side by side and having an operator read from one and type into the other.
tense is adj. Of programs, very clever and efficient. A tense piece of code often got that way because it was highly {bum}med, but sometimes it was just based on a great idea. A comment in a clever routine by Mike Kazar, once a grad-student ...
tense2 is will bring tears to your eyes." A tense programmer is one who produces tense code.
tenured graduate student is n. One who has been in graduate school for 10 years (the usual maximum is 5 or 6) a `ten-yeared student (get it?). Actually, this term may be used of any grad student beginning in his seventh year. Students dont r...
tenured graduate student2 is professors do, but a tenth-year graduate student has probably been around the university longer than any untenured professor.
tera- is /ter*/ [SI] pref. See {{quantifiers}}.
teraflop club is /ter*-flop kluhb/ [FLOP = Floating Point Operation] n. A mythical association of people who consume outrageous amounts of computer time in order to produce a few simple pictures of glass balls with intricate ray-tracing techni...
teraflop club2 is said to have been the founder.
terminak is /termi-nak`/ [Caltech, ca. 1979] n. Any malfunctioning computer terminal. A common failure mode of Lear-Siegler ADM 3a terminals caused the `L key to produce the `K code instead; complaints about this tended to look like "Terminak...
terminak2 is {sun-stools}, {Telerat}, {HP-SUX}.
terminal brain death is n. The extreme form of {terminal illness} (sense 1). What someone who has obviously been hacking continuously for far too long is said to be suffering from.
terminal illness is n. 1. Syn. {raster burn}. 2. The `burn-in condition your CRT tends to get if you dont have a screen saver.
terminal junkie is [UK] n. A {wannabee} or early {larval stage} hacker who spends most of his or her time wandering the directory tree and writing {noddy} programs just to get a fix of computer time. Variants include `terminal jockey, `cons...
terminal junkie2 is `console jockey seems to imply more expertise than the other three (possibly because of the exalted status of the {{console}} relative to an ordinary terminal). See also {twink}, {read-only user}.
terpri is /terpree/ [from LISP 1.5 (and later, MacLISP)] vi. To output a {newline}. Now rare as jargon, though still used as techspeak in Common LISP. It is a contraction of `TERminate PRInt line, named for the fact that, on early OSes, no c...
terpri2 is line was formed, so this operation terminated the line and emitted the output.
test is n. 1. Real users bashing on a prototype long enough to get thoroughly acquainted with it, with careful monitoring and followup of the results. 2. Some bored random user trying a couple of the simpler features with a developer looking ...
test2 is mistakes. Judging by the quality of most software, the second definition is far more prevalent. See also {demo}.
TeX is /tekh/ n. An extremely powerful {macro}-based text formatter written by Donald E. Knuth, very popular in the computer-science community (it is good enough to have displaced UNIX `troff(1), the other favored formatter, even at many UNI...
TeX2 is correct (guttural) pronunciation, and the correct spelling (all caps, squished together, with the E depressed below the baseline; the mixed-case `TeX is considered an acceptable kluge on ASCII-only devices). Fans like to proliferate...
TeX3 is TeXnician (TeX user), TeXhacker (TeX programmer), TeXmaster (competent TeX programmer), TeXhax, and TeXnique. Knuth began TeX because he had become annoyed at the declining quality of the typesetting in volumes I--III of his monument...
TeX4 is {bible}). In a manifestation of the typical hackish urge to solve the problem at hand once and for all, he began to design his own typesetting language. He thought he would finish it on his sabbatical in 1978; he was wrong by only ...
TeX5 is frozen around 1985, but volume IV of `The Art of Computer Programming has yet to appear as of mid-1991. The impact and influence of TeXs design has been such that nobody minds this very much. Many grand hackish projects have started ...
TeX6 is something else; Knuths diversion was simply on a grander scale than most.
text is n. 1. [techspeak] Executable code, esp. a `pure code portion shared between multiple instances of a program running in a multitasking OS (compare {English}). 2. Textual material in the mainstream sense; data in ordinary {{ASCII}} or {...
text2 is "Those are text files; you can review them using the editor." These two contradictory senses confuse hackers, too.
thanks in advance is [USENET] Conventional net.politeness ending a posted request for information or assistance. Sometimes written `advTHANKSance or `aTdHvAaNnKcSe or abbreviated `TIA. See {net.-}, {netiquette}.
the X that can be Y is not the true X is Yet another instance of hackerdoms peculiar attraction to mystical references --- a common humorous way of making exclusive statements about a class of things. The template is from the `Tao te Ching "T...
the X that can be Y is not the true X2 is true Tao." The implication is often that the X is a mystery accessible only to the enlightened. See the {trampoline} entry for an example, and compare {has the X nature}.
theology is n. 1. Ironically or humorously used to refer to {religious issues}. 2. Technical fine points of an abstruse nature, esp. those where the resolution is of theoretical interest but is relatively {marginal} with respect to actual use...
theology2 is software issues with a heavy AI or language-design component, such as the smart-data vs. smart-programs dispute in AI.
theory is n. The consensus, idea, plan, story, or set of rules that is currently being used to inform a behavior. This is a generalization and abuse of the technical meaning. "Whats the theory on fixing this TECO loss?" "Whats the theory on...
theory2 is "Whats the current theory on letting lusers on during the day?" "The theory behind this change is to fix the following well-known screw...."
thinko is /thingkoh/ [by analogy with `typo] n. A momentary, correctable glitch in mental processing, especially one involving recall of information learned by rote; a bubble in the stream of consciousness. Syn. {braino}. Compare {mouso}.
This time, for sure! is excl. Ritual affirmation frequently uttered during protracted debugging sessions involving numerous small obstacles (e.g., attempts to bring up a UUCP connection). For the proper effect, this must be uttered in a fruit...
This time, for sure!2 is heard "Hey, Rocky! Watch me pull a rabbit out of my hat!" The {canonical} response is, of course, "But that trick *never* works!" See {{Humor, Hacker}}.
thrash is vi. To move wildly or violently, without accomplishing anything useful. Paging or swapping systems that are overloaded waste most of their time moving data into and out of core (rather than performing useful computation) and are the...
thrash2 is changing his mind (esp. about what to work on next) is said to be thrashing. A person frantically trying to execute too many tasks at once (and not spending enough time on any single task) may also be described as thrashing. Compa...
thread is n. [USENET, GEnie, CompuServe] Common abbreviation of `topic thread, a more or less continuous chain of postings on a single topic.
three-finger salute is n. Syn. {Vulcan nerve pinch}.
thud is n. 1. Yet another meta-syntactic variable (see {foo}). It is reported that at CMU from the mid-1970s the canonical series of these was `foo, `bar, `thud, `blat. 2. Rare term for the hash character, `# (ASCII 0100011). See {ASCII} for...
thunk is /thuhnk/ n. 1. "A piece of coding which provides an address", according to P. Z. Ingerman, who invented thunks in 1961 as a way of binding actual parameters to their formal definitions in Algol-60 procedure calls. If a procedure is c...
thunk2 is formal parameter, the compiler generates a {thunk} to compute the expression and leave the address of the result in some standard location. 2. Later generalized into an expression, frozen together with its environment, for later e...
thunk3 is in techspeak is called a `closure). The process of unfreezing these thunks is called `forcing. 3. A {stubroutine}, in an overlay programming environment, that loads and jumps to the correct overlay. Compare {trampoline}. 4. Peop...
thunk4 is manner. "It occurred to me the other day that I am rather accurately modeled by a thunk --- I frequently need to be forced to completion." --- paraphrased from a {plan file}. Historical note There are a couple of onomatopoeic myth...
thunk5 is The most common is that it is the sound made by data hitting the stack; another holds that the sound is that of the data hitting an accumulator. Yet another holds that it is the sound of the expression being unfrozen at argument-e...
thunk6 is inventors, it was coined after they realized (in the wee hours after hours of discussion) that the type of an argument in Algol-60 could be figured out in advance with a little compile-time thought, simplifying the evaluation machi...
thunk7 is thought of; thus it was christened a `thunk, which is "the past tense of `think at two in the morning".
tick is n. 1. A {jiffy} (sense 1). 2. In simulations, the discrete unit of time that passes between iterations of the simulation mechanism. In AI applications, this amount of time is often left unspecified, since the only constraint of inter...
tick2 is AI simulation is often pejoratively referred to as `tick-tick-tick simulation, especially when the issue of simultaneity of events with long, independent chains of causes is {handwave}d. 3. In the FORTH language, a single quote char...
tick-list features is [Acorn Computers] n. Features in software or hardware that customers insist on but never use (calculators in desktop TSRs and that sort of thing). The American equivalent would be `checklist features, but this jargon sen...
tickle a bug is vt. To cause a normally hidden bug to manifest through some known series of inputs or operations. "You can tickle the bug in the Paradise VGA cards highlight handling by trying to set bright yellow reverse video."
tiger team is [U.S. military jargon] n. A team whose purpose is to penetrate security, and thus test security measures. These people are paid professionals who do hacker-type tricks, e.g., leave cardboard signs saying "bomb" in critical defen...
tiger team2 is "Your codebooks have been stolen" (they usually havent been) inside safes, etc. After a successful penetration, some high-ranking security type shows up the next morning for a `security review and finds the sign, note, etc., ...
tiger team3 is of tiger teams sometimes lead to early retirement for base commanders and security officers (see the {patch} entry for an example). A subset of tiger teams are professional {cracker}s, testing the security of military computer...
tiger team4 is via networks or supposedly `secure comm channels. Some of their escapades, if declassified, would probably rank among the greatest hacks of all times. The term has been adopted in commercial computer-security circles in this m...
time sink is [poss. by analogy with `heat sink or `current sink] n. A project that consumes unbounded amounts of time.
time T is /tim T/ n. 1. An unspecified but usually well-understood time, often used in conjunction with a later time T+1. "Well meet on campus at time T or at Louies at time T+1" means, in the context of going out for dinner "We can meet on ...
time T2 is Louies itself a bit later." (Louies is a Chinese restaurant in Palo Alto that is a favorite with hackers.) Had the number 30 been used instead of the number 1, it would have implied that the travel time from campus to Louies is ...
time T3 is hasnt been decided on yet), you can meet half an hour later at Louies than you could on campus and end up eating at the same time. See also {since time T equals minus infinity}.
times-or-divided-by is [by analogy with `plus-or-minus] quant. Term occasionally used when describing the uncertainty associated with a scheduling estimate, for either humorous or brutally honest effect. For a software project, the factor is u...
tinycrud is /tinee-kruhd/ n. A pejorative used by habitues of older game-oriented {MUD} versions for TinyMUDs and other user-extensible {MUD} variants; esp. common among users of the rather violent and competitive AberMUD and MIST systems. Th...
tinycrud2 is how (allegedly) inconsistent and lacking in genuine atmosphere the scenarios generated in user extensible MUDs can be. Other common knocks on them are that they feature little overall plot, bad game topology, little competitive...
tinycrud3 is alleged horrors of the TinyMUD code itself. This dispute is one of the MUD worlds hardiest perennial {holy wars}.
tip of the ice-cube is [IBM] n. The visible part of something small and insignificant. Used as an ironic comment in situations where `tip of the iceberg might be appropriate if the subject were actually nontrivial.
tired iron is [IBM] n. Hardware that is perfectly functional but far enough behind the state of the art to have been superseded by new products, presumably with sufficient improvement in bang-per-buck that the old stuff is starting to look a b...
tits on a keyboard is n. Small bumps on certain keycaps to keep touch-typists registered (usually on the `5 of a numeric keypad, and on the `F and `J of a QWERTY keyboard).
TLA is /T-L-A/ [Three-Letter Acronym] n. 1. Self-describing acronym for a species with which computing terminology is infested. 2. Any confusing acronym. Examples include MCA, FTP, SNA, CPU, MMU, SCCS, DMU, FPU, NNTP, TLA. People who like th...
TLA2 is three letters, just as not all four-letter words have four letters. One also hears of `ETLA (Extended Three-Letter Acronym, pronounced /ee tee el ay/) being used to describe four-letter acronyms. The term `SFLA (Stupid Four-Letter ...
TLA3 is {YABA}. The self-effacing phrase "TDM TLA" (Too Damn Many...) is often used to bemoan the plethora of TLAs in use. In 1989, a random of the journalistic persuasion asked hacker Paul Boutin "What do you think will be the biggest prob...
TLA4 is straight-faced response "There are only 17,000 three-letter acronyms." (To be exact, there are 26^3 = 17,576.)
TMRC is /tmerk/ n. The Tech Model Railroad Club at MIT, one of the wellsprings of hacker culture. The 1959 `Dictionary of the TMRC Language compiled by Peter Samson included several terms which became basics of the hackish vocabulary (see esp...
TMRC2 is legendary layout was already a marvel of complexity. The control system alone featured about 1200 relays. There were {scram switch}es located at numerous places around the room that could be pressed if something undesirable was about...
TMRC3 is an obstruction. Another feature of the system was a digital clock on the dispatch board. Normally it ran at some multiple of real time, but if someone hit a scram switch the clock stopped and the display was replaced with the word ...
TMRC4 is the Bibliography), gives a stimulating account of those early years. TMRCs Power and Signals group included most of the early PDP-1 hackers and the people who later bacame the core of the MIT AI Lab staff. Thirty years later that ...
TMRC5 is lexicon accordingly includes a number of entries from a recent revision of the TMRC Dictionary.
to a first approximation is 1. [techspeak] When one is doing certain numerical computations, an approximate solution may be computed by any of several heuristic methods, then refined to a final value. By using the starting point of a first app...
to a first approximation2 is algorithm that converges more quickly to the correct result. 2. In jargon, a preface to any comment that indicates that the comment is only approximately true. The remark "To a first approximation, I feel good" m...
to a first approximation3 is reveal that not all is perfect (e.g., a nagging cough still remains after an illness).
to a zeroth approximation is [from `to a first approximation] A *really* sloppy approximation; a wild guess. Compare {social science number}.
toast is 1. n. Any completely inoperable system or component, esp. one that has just crashed and burned "Uh, oh ... I think the serial board is toast." 2. vt. To cause a system to crash accidentally, especially in a manner that requires manua...
toast2 is {firewall machine} again."
toaster is n. 1. The archetypal really stupid application for an embedded microprocessor controller; often used in comments that imply that a scheme is inappropriate technology (but see {elevator controller}). "{DWIM} for an assembler? Thatd...
toaster2 is toaster!" 2. A very, very dumb computer. "You could run this program on any dumb toaster." See {bitty box}, {Get a real computer!}, {toy}, {beige toaster}. 3. A Macintosh, esp. the Classic Mac. Some hold that this is implied b...
toaster3 is my box without toasters, but since then Ive added two boards and a second disk drive."
toeprint is n. A {footprint} of especially small size.
toggle is vt. To change a {bit} from whatever state it is in to the other state; to change from 1 to 0 or from 0 to 1. This comes from `toggle switches, such as standard light switches, though the word `toggle actually refers to the mechanism...
toggle2 is which it is flipped rather than to the fact that the switch has two positions. There are four things you can do to a bit set it (force it to be 1), clear (or zero) it, leave it alone, or toggle it. (Mathematically, one would say t...
toggle3 is functions of one boolean argument, but saying that is much less fun than talking about toggling bits.)
tool is 1. n. A program used primarily to create, manipulate, modify, or analyze other programs, such as a compiler or an editor or a cross-referencing program. Oppose {app}, {operating system}. 2. [UNIX] An application program with a simple,...
tool2 is interface designed specifically to be used in programmed combination with other tools (see {filter}). 3. [MIT general to students there] vi. To work; to study (connotes tedium). The TMRC Dictionary defined this as "to set ones brain ...
tool3 is A student who studies too much and hacks too little. (MITs student humor magazine rejoices in the name `Tool and Die.)
toolsmith is n. The software equivalent of a tool-and-die specialist; one who specializes in making the {tool}s with which other programmers create applications. See also {uninteresting}.
topic drift is n. Term used on GEnie, USENET and other electronic fora to describe the tendency of a {thread} to drift away from the original subject of discussion (and thus, from the Subject header of the originating message), or the results ...
topic drift2 is reminders that the discussion has strayed off any useful track. "I think we started with a question about Nivens last book, but weve ended up discussing the sexual habits of the common marmoset. Now *thats* topic drift!"
topic group is n. Syn. {forum}.
TOPS-10 is /tops-ten/ n. DECs proprietary OS for the fabled {PDP-10} machines, long a favorite of hackers but now effectively extinct. A fountain of hacker folklore; see appendix A. See also {{ITS}}, {{TOPS-20}}, {{TWENEX}}, {VMS}, {operating...
TOPS-102 is BOTS-10 (from `bottoms-ten) as a comment on the inappropriateness of describing it as the top of anything.
TOPS-20 is /tops-twentee/ n. See {{TWENEX}}.
toto is /tohtoh/ n. This is reported to be the default scratch file name among French-speaking programmers --- in other words, a francophone {foo}.
tourist is [ITS] n. A guest on the system, especially one who generally logs in over a network from a remote location for {comm mode}, email, games, and other trivial purposes. One step below {luser}. Hackers often spell this {turist}, perha...
tourist2 is {luser} (this also expresses the ITS cultures penchant for six-letterisms). Compare {twink}, {read-only user}.
tourist information is n. Information in an on-line display that is not immediately useful, but contributes to a viewers gestalt of whats going on with the software or hardware behind it. Whether a given piece of info falls in this category d...
tourist information2 is for at any given time. The `bytes free information at the bottom of an MS-DOS `dir display is tourist information; so (most of the time) is the TIME information in a UNIX `ps(1) display.
touristic is adj. Having the quality of a {tourist}. Often used as a pejorative, as in `losing touristic scum. Often spelled `turistic or `turistik, so that phrase might be more properly rendered `lusing turistic scum.
toy is n. A computer system; always used with qualifiers. 1. `nice toy One that supports the speakers hacking style adequately. 2. `just a toy A machine that yields insufficient {computron}s for the speakers preferred uses. This is not con...
toy2 is least be fun. It is also strongly conditioned by ones expectations; Cray XMP users sometimes consider the Cray-1 a `toy, and certainly all RISC boxes and mainframes are toys by their standards. See also {Get a real computer!}.
toy language is n. A language useful for instructional purposes or as a proof-of-concept for some aspect of computer-science theory, but inadequate for general-purpose programming. {Bad Thing}s can result when a toy language is promoted as a ...
toy language2 is (see {bondage-and-discipline language}); the classic example is {{Pascal}}. Several moderately well-known formalisms for conceptual tasks such as programming Turing machines also qualify as toy languages in a less negative se...
toy problem is [AI] n. A deliberately oversimplified case of a challenging problem used to investigate, prototype, or test algorithms for a real problem. Sometimes used pejoratively. See also {gedanken}, {toy program}.
toy program is n. 1. One that can be readily comprehended; hence, a trivial program (compare {noddy}). 2. One for which the effort of initial coding dominates the costs through its life cycle. See also {noddy}.
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