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u- pref.

Written shorthand for micro-;

techspeak when applied to metric units, jargon when used

otherwise. Derived from the Greek letter "mu", the first letter

of "micro" (and which letter looks a lot like the English letter

"u").

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Up:= U =

UBD /U-B-D/ n.

[abbreviation for `User Brain Damage'] An abbreviation used to

close out trouble reports obviously due to utter cluelessness on

the user's part. Compare pilot

error; oppose PBD; see also

brain-damaged.

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UBE // n.

[abbrev., Unsoliclited Bulk Email] A widespread, more formal

term for email spam. Compare UCE. The UBE term recognizes that spam is

uttered by nonprofit and advocacy groups whose motives are not

commercial.

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UCE n.

[abbrev., Unsolicited Commercial Email] A widespread, more

formal term for email spam. Compare

UBE, which may be superseding it.

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Up:= U =

UDP /U-D-P/ v.,n.

[Usenet] Abbreviation for Usenet Death Penalty. Common

(probably now more so than the full form), and frequently verbed.

Compare IDP.

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UN*X n.

Used to refer to the Unix operating system (a trademark of

AT&T, then of Novell, then of SCO, and then of Caldera) in

writing, but avoiding the need for the ugly (TM) typography. Also used to refer to any or all

varieties of Unixoid operating systems. Ironically, lawyers now

say that the requirement for the trademark postfix has no legal

force, but the asterisk usage is entrenched anyhow. It has been

suggested that there may be a psychological connection to

practice in certain religions (especially Judaism) in which the

name of the deity is never written out in full, e.g., `YHWH' or

`G-d' is used. See also glob and splat out.

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external reference, Next:under the hood, Previous:UN*X, Up:= U =

undefined external reference excl.

[Unix] A message from Unix's linker. Used in speech to flag

loose ends or dangling references in an argument or

discussion.

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reference, Up:= U =

under the hood adj.

[hot-rodder talk] 1. Used to introduce the underlying

implementation of a product (hardware, software, or idea).

Implies that the implementation is not intuitively obvious from

the appearance, but the speaker is about to enable the listener

to grok it. "Let's now look under the

hood to see how ...." 2. Can also imply that the

implementation is much simpler than the appearance would

indicate: "Under the hood, we are just fork/execing the shell."

3. Inside a chassis, as in "Under the hood, this baby has a 40MHz

68030!"

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Next:uninteresting,

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hood, Up:= U =

undocumented feature n.

See feature.

The Jargon File, Version 4.2.2, 20 Aug 2000 · 第 1713 / 1941 题