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as specifically for the happy-face emoticon.

It appears that the emoticon was invented by one Scott Fahlman on the CMU {bboard} systems around 1980. He later wrote: "I wish I had saved the original post, or at least recorded the date for posterity, but I had no idea that I was starting something that would soon pollute all the world's communication channels." [GLS

confirms that he remembers this original posting].

Note for the {newbie}: Overuse of the smiley is a mark of loserhood! More than one per paragraph is a fairly sure sign that you've gone over the line.

:empire: n. Any of a family of military simulations derived from a game written by Peter Langston many years ago. There are five or six multi-player variants of varying degrees of sophistication, and one single-player version implemented for both UNIX and VMS; the latter is even available as MS-DOS freeware. All are notoriously addictive.

:engine: n. 1. A piece of hardware that encapsulates some function but can't be used without some kind of {front end}. Today we have, especially, `print engine': the guts of a laser printer.

An analogous piece of software; notionally, one that does a lot of noisy crunching, such as a `database engine'.

The hackish senses of engine' are actually close to its original, pre-Industrial-Revolution sense of a skill, clever device, or instrument (the word is cognate toingenuity'). This sense had not been completely eclipsed by the modern connotation of power-transducing machinery in Charles Babbage's time, which explains why he named the stored-program computer that he designed in 1844 the `Analytical Engine'.

:English: 1. n.,obs. The source code for a program, which may be in any language, as opposed to the linkable or executable binary produced from it by a compiler. The idea behind the term is that to a real hacker, a program written in his favorite programming language is at least as readable as English. Usage: used mostly by old-time hackers, though recognizable in context. 2. The official name of the database language used by the Pick Operating System, actually a sort of crufty, brain-damaged SQL with delusions of grandeur. The name permits {marketroid}s to say "Yes, and you can program our computers in English!" to ignorant {suit}s without quite running afoul of the truth-in-advertising laws.

:enhancement: n. {Marketroid}-speak for a bug {fix}. This abuse of language is a popular and time-tested way to turn incompetence into increased revenue. A hacker being ironic would instead call the fix a {feature} --- or perhaps save some effort by declaring the bug itself to be a feature.

:ENQ: /enkw/ or /enk/ [from the ASCII mnemonic ENQuire for 0000101] An on-line convention for querying someone's availability.

After opening a {talk mode} connection to someone apparently in heavy hack mode, one might type SYN SYN ENQ?' (the SYNs representing notional synchronization bytes), and expect a return of {ACK} or {NAK} depending on whether or not the person felt interruptible. Compare {ping}, {finger}, and the usage ofFOO?' listed under {talk mode}.

:EOF: /E-O-F/ [abbreviation, `End Of File'] n. 1. [techspeak]

Refers esp. to whatever {out-of-band} value is returned by C's sequential character-input functions (and their equivalents in other environments) when end of file has been reached. This value is -1 under C libraries postdating V6 UNIX, but was originally 0. 2. [UNIX] The keyboard character (usually control-D, the ASCII EOT (End Of Transmission) character) which is mapped by the terminal driver into an end-of-file condition. 3. Used by extension in non-computer contexts when a human is doing something that can be modeled as a sequential read and can't go further.

"Yeah, I looked for a list of 360 mnemonics to post as a joke, but I hit EOF pretty fast; all the library had was a {JCL} manual."

See also {EOL}.

:EOL: /E-O-L/ [End Of Line] n. Syn. for {newline}, derived perhaps from the original CDC6600 Pascal. Now rare, but widely recognized and occasionally used for brevity. Used in the example entry under {BNF}. See also {EOF}.

:EOU: /E-O-U/ n. The mnemonic of a mythical ASCII control character (End Of User) that could make an ASR-33 Teletype explode on receipt. This parodied the numerous obscure delimiter and control characters left in ASCII from the days when it was associated more with wire-service teletypes than computers (e.g., FS, GS, RS, US, EM, SUB, ETX, and esp. EOT). It is worth remembering that ASR-33s were big, noisy mechanical beasts with a lot of clattering parts; the notion that one might explode was nowhere near as ridiculous as it might seem to someone sitting in front of a {tube} or flatscreen today.

:epoch: [UNIX: prob. from astronomical timekeeping] n. The time and date corresponding to 0 in an operating system's clock and timestamp values. Under most UNIX versions the epoch is 00:00:00

GMT, January 1, 1970; under VMS, it's 00:00:00 GMT of November 17, 1858 (base date of the U.S. Naval Observatory's ephemerides).

System time is measured in seconds or {tick}s past the epoch.

Weird problems may ensue when the clock wraps around (see {wrap around}), which is not necessarily a rare event; on systems counting 10 ticks per second, a signed 32-bit count of ticks is good only for 6.8 years. The 1-tick-per-second clock of UNIX is good only until January 18, 2038, assuming at least some software continues to consider it signed and that word lengths don't increase by then. See also {wall time}.

:epsilon: [see {delta}] 1. n. A small quantity of anything. "The cost is epsilon." 2. adj. Very small, negligible; less than {marginal}. "We can get this feature for epsilon cost."

within epsilon of': close enough to be indistinguishable for all practical purposes. This is even closer than beingwithin delta of'. "That's not what I asked for, but it's within epsilon of what I wanted." Alternatively, it may mean not close enough, but very little is required to get it there: "My program is within epsilon of working."

:epsilon squared: n. A quantity even smaller than {epsilon}, as small in comparison to epsilon as epsilon is to something normal; completely negligible. If you buy a supercomputer for a million dollars, the cost of the thousand-dollar terminal to go with it is {epsilon}, and the cost of the ten-dollar cable to connect them is epsilon squared. Compare {lost in the underflow}, {lost in the noise}.

:era, the: Syn. {epoch}. Webster's Unabridged makes these words almost synonymous, but `era' usually connotes a span of time rather than a point in time. The {epoch} usage is recommended.

:Eric Conspiracy: n. A shadowy group of mustachioed hackers named Eric first pinpointed as a sinister conspiracy by an infamous talk.bizarre posting ca. 1986; this was doubtless influenced by the numerous Eric' jokes in the Monty Python oeuvre. There do indeed seem to be considerably more mustachioed Erics in hackerdom than the frequency of these three traits can account for unless they are correlated in some arcane way. Well-known examples include Eric Allman (he of theAllman style' described under {indent style}) and Erik Fair (co-author of NNTP); your editor has heard from about fourteen others by email, and the organization line `Eric Conspiracy Secret Laboratories' now emanates regularly from more than one site.

:Eris: /e'ris/ n. The Greek goddess of Chaos, Discord, Confusion, and Things You Know Not Of; her name was latinized to Discordia and she was worshiped by that name in Rome. Not a very friendly deity in the Classical original, she was reinvented as a more benign personification of creative anarchy starting in 1959 by the adherents of {Discordianism} and has since been a semi-serious subject of veneration in several `fringe' cultures, including hackerdom. See {Discordianism}, {Church of the SubGenius}.

:erotics: /ee-ro'tiks/ n. [Helsinki University of Technology, Finland] n. English-language university slang for electronics.

Often used by hackers in Helsinki, maybe because good electronics excites them and makes them warm.

:error 33: [XEROX PARC] n. 1. Predicating one research effort upon the success of another. 2. Allowing your own research effort to be placed on the critical path of some other project (be it a research effort or not).

:essentials: n. Things necessary to maintain a productive and secure hacking environment. "A jug of wine, a loaf of bread, a 20-megahertz 80386 box with 8 meg of core and a 300-megabyte disk supporting full UNIX with source and X windows and EMACS and UUCP

via a 'blazer to a friendly Internet site, and thou."

:evil: adj. As used by hackers, implies that some system, program, person, or institution is sufficiently maldesigned as to be not worth the bother of dealing with. Unlike the adjectives in the {cretinous}/{losing}/{brain-damaged} series, `evil' does not imply incompetence or bad design, but rather a set of goals or design criteria fatally incompatible with the speaker's. This is more an esthetic and engineering judgment than a moral one in the mainstream sense. "We thought about adding a {Blue Glue}

interface but decided it was too evil to deal with." "{TECO}

is neat, but it can be pretty evil if you're prone to typos."

Often pronounced with the first syllable lengthened, as /eeee'vil/.

:exa-: /ek's*/ [SI] pref. See {{quantifiers}}.

:examining the entrails: n. The process of {grovel}ling through a core dump or hex image in the attempt to discover the bug that brought a program or system down. The reference is to divination from the entrails of a sacrified animal. Compare {runes}, {incantation}, {black art}, {desk check}.

:EXCH: /eks'ch*/ or /eksch/ vt. To exchange two things, each for the

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