The Hacker's Dictionary by - (sneezy the snowman read aloud txt) 📕

and promote truth, justice, and the American way, etc. See {documentation'. Often used in the plural2}.

:blue wire: [IBM] n. Patch wires added to circuit boards at the factory to correct design or fabrication problems. This may be necessary if there hasn't been time to design and qualify another board version.

Compare documentation'. Often used in the plural1, documentation'. Often used in the plural0, @' specifies a nested series of9.

:blurgle: /bler'gl/ [Great Britain] n. Spoken @' specifies a nested series of8, to indicate some text which is obvious from context, or which is already known. If several words are to be replaced, blurgle may well be doubled or trebled. "To look for something in several files use `grep string blurgle blurgle'." In each case, "blurgle blurgle" would be understood to be replaced by the file you wished to search. Compare @' specifies a nested series of7, sense 6.

: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 it must usually be learned by osmosis from other hackers. Consider this BNF for a U.S. postal address:

<postal-address> ::= <name-part> <street-address> <zip-part> <personal-part> ::= <name> | <initial> "." <name-part> ::= <personal-part> <last-name> [<jr-part>] <EOL> | <personal-part> <name-part> <street-address> ::= [<apt>] <house-num> <street-name> <EOL> <zip-part> ::= <town-name> "," <state-code> <ZIP-code> <EOL>

This translates into English as: "A postal-address consists of a name-part, followed by a street-address part, followed by a zip-code part. A personal-part consists of either a first name or an initial followed by a dot. A name-part consists of either: a personal-part followed by a last name followed by an optional `jr-part' (Jr., Sr., or dynastic number) and end-of-line, or a personal part followed by a name part (this rule illustrates the use of recursion in BNFs, covering the case of people who use multiple first and middle names and/or initials). A street address consists of an optional apartment specifier, followed by a street number, followed by a street name. A zip-part consists of a town-name, followed by a comma, followed by a state code, followed by a ZIP-code followed by an end-of-line." Note that many things (such as the format of a personal-part, apartment specifier, or ZIP-code) are left unspecified. These are presumed to be obvious from context or detailed somewhere nearby. See also @' specifies a nested series of6.

The term is also used loosely for any number of variants and extensions, possibly containing some or all of the @' specifies a nested series of5

wildcards such as *' or+'. In fact the example above isn't the pure form invented for the Algol-60 report; it uses []', which was introduced a few years later in IBM's PL/I definition but is now universally recognized. 3. In {{science-fiction fandom}}, BNF meansBig-Name Fan'

(someone famous or notorious). Years ago a fan started handing out black-on-green BNF buttons at SF conventions; this confused the hacker contingent terribly.

:boa: [IBM] n. Any one of the fat cables that lurk under the floor in a @' specifies a nested series of4. Possibly so called because they display a ferocious life of their own when you try to lay them straight and flat after they have been coiled for some time. It is rumored within IBM that channel cables for the 370 are limited to 200 feet because beyond that length the boas get dangerous --- and it is worth noting that one of the major cable makers uses the trademark `Anaconda'.

:board: n. 1. In-context synonym for @' specifies a nested series of3; sometimes used even for USENET newsgroups. 2. An electronic circuit board (compare @' specifies a nested series of2).

:boat anchor: n. 1. Like @' specifies a nested series of1 but more severe; implies that the offending hardware is irreversibly dead or useless. "That was a working motherboard once. One lightning strike later, instant boat anchor!" 2. A person who just takes up space.

:BOF: /B-O-F/ or /bof/ n. Abbreviation for the phrase "Birds Of a Feather" (flocking together), an informal discussion group and/or bull session scheduled on a conference program. It is not clear where or when this term originated, but it is now associated with the USENIX conferences for UNIX techies and was already established there by 1984. It was used earlier than that at DECUS

conferences, and is reported to have been common at SHARE meetings as far back as the early 1960s.

:bogo-sort: /bohgoh-sort'/ n. (var.stupid-sort') The archetypical perversely awful algorithm (as opposed to @' specifies a nested series of0, which is merely the generic bad algorithm).

Bogo-sort is equivalent to repeatedly throwing a deck of cards in the air, picking them up at random, and then testing whether they are in order. It serves as a sort of canonical example of awfulness. Looking at a program and seeing a dumb algorithm, one might say "Oh, I see, this program uses bogo-sort." Compare {bogus}, {brute force}.

:bogometer: /boh-gom'-*t-er/ n. See {bogosity}. Compare the `wankometer' described in the {wank} entry; see also {bogus}.

:bogon: /boh'gon/ [by analogy with proton/electron/neutron, but doubtless reinforced after 1980 by the similarity to Douglas Adams's `Vogons'; see the Bibliography in {appendix C}] n.

The elementary particle of bogosity (see {quantum bogodynamics}). For instance, "the Ethernet is emitting bogons again" means that it is broken or acting in an erratic or bogus fashion. 2. A query packet sent from a TCP/IP domain resolver to a root server, having the reply bit set instead of the query bit.

Any bogus or incorrectly formed packet sent on a network. 4. By synecdoche, used to refer to any bogus thing, as in "I'd like to go to lunch with you but I've got to go to the weekly staff bogon". 5. A person who is bogus or who says bogus things. This was historically the original usage, but has been overtaken by its derivative senses 1--4. See also {bogosity}, {bogus}; compare {psyton}, {fat electrons}, {magic smoke}.

The bogon has become the type case for a whole bestiary of nonce particle names, including the clutron' orcluon' (indivisible particle of cluefulness, obviously the antiparticle of the bogon) and the futon (elementary particle of {randomness}). These are not so much live usages in themselves as examples of a live meta-usage: that is, it has become a standard joke or linguistic maneuver to "explain" otherwise mysterious circumstances by inventing nonce particle names. And these imply nonce particle theories, with all their dignity or lack thereof (we might note parenthetically that this is a generalization from "(bogus particle) theories" to "bogus (particle theories)"!). Perhaps such particles are the modern-day equivalents of trolls and wood-nymphs as standard starting-points around which to construct explanatory myths. Of course, playing on an existing word (as in the `futon') yields additional flavor.

Compare {magic smoke}.

:bogon filter: /boh'gon fil'tr/ n. Any device, software or hardware, that limits or suppresses the flow and/or emission of bogons.

"Engineering hacked a bogon filter between the Cray and the VAXen, and now we're getting fewer dropped packets." See also {bogosity}, {bogus}.

:bogon flux: /boh'gon fluhks/ n. A measure of a supposed field of {bogosity} emitted by a speaker, measured by a {bogometer}; as a speaker starts to wander into increasing bogosity a listener might say "Warning, warning, bogon flux is rising". See {quantum bogodynamics}.

:bogosity: /boh-go's-tee/ n. 1. The degree to which something is {bogus}. At CMU, bogosity is measured with a {bogometer}; in a seminar, when a speaker says something bogus, a listener might raise his hand and say "My bogometer just triggered". More extremely, "You just pinned my bogometer" means you just said or did something so outrageously bogus that it is off the scale, pinning the bogometer needle at the highest possible reading (one might also say "You just redlined my bogometer"). The agreed-upon unit of bogosity is the microLenat /mi:k`roh-len't/

(uL). The consensus is that this is the largest unit practical for everyday use. 2. The potential field generated by a {bogon flux}; see {quantum bogodynamics}. See also {bogon flux}, {bogon filter}, {bogus}.

Historical note: The microLenat was invented as an attack against noted computer scientist Doug Lenat by a {tenured graduate student}. Doug had failed the student on an important exam for giving only "AI is bogus" as his answer to the questions. The slur is generally considered unmerited, but it has become a running gag nevertheless. Some of Doug's friends argue that of course a microLenat is bogus, since it is only one millionth of a Lenat. Others have suggested that the unit should be redesignated after the grad student, as the microReid.

:bogotify: /boh-go't*-fi:/ vt. To make or become bogus. A program that has been changed so many times as to become completely disorganized has become bogotified. If you tighten a nut too hard and strip the threads on the bolt, the bolt has become bogotified and you had better not use it any more. This coinage led to the notional autobogotiphobia' defined asthe fear of becoming bogotified'; but is not clear that the latter has ever been `live' jargon rather than a self-conscious joke in jargon about jargon. See also {bogosity}, {bogus}.

:bogue out: /bohg owt/ vi. To become bogus, suddenly and