USG Unix
operating system /U-S-G yoo'niks/ Refers to AT&T Unix
commercial versions after Version 7, especially System III
and System V releases 1, 2, and 3. So called because during
most of the lifespan of those versions AT&T's support crew was
called the "Unix Support Group".
Compare BSD.
[{Jargon File]
(1997-02-20)