Related:

• BSD: /B-S-D/ n. [abbreviation for `Berkeley System Distribution'] a family of {{UNIX}} versions for the {DEC} {VAX} and PDP-11 developed by Bill Joy and others at {Berzerkeley} starting around 1980
  incorporating paged virtual memory, TCP/IP networking enhancements, and many other features....
• USG Unix /U-S-G yoo'niks/ n. 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&...
• USG UNIX: /U-S-G yoo'niks/ n. 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'....
• Version 7: alt. V7 /vee' se'vn/ n. The 1978 unsupported release of {{UNIX}} ancestral to all current commercial versions.
  Before the release of the POSIX/SVID standards, V7's features were often treated as a UNIX portability baseline....
• Version 7 alt. V7 /vee' se'vn/ n. The first widely distributed version of Unix, released unsupported by Bell Labs in 1978.
  The term is used adjectivally to describe Unix features and programs that date from that release, and are thus guaranteed to be present and portable in all Unix versions (this was the standard gauge of portability before the POSIX and IEEE 1003 standards)....
• unafish: n. In hackish lore, refers to the mutated punchline of an age-old joke to be found at the bottom of the manual pages of `tunefs(8)' in the original {BSD} 4.
  2 distribution. The joke was removed in later releases once commercial sites started using 4....
• Death Star n. [from the movie "Star Wars"] 1. The AT&
  T corporate logo, which appears on computers sold by AT&...
• vi: /V-I/, *not* /vi:/ and *never* /siks/ [from `Visual Interface'] n.
  A screen editor crufted together by Bill Joy for an early {BSD} release....
• BSD: Unix with Berkeley enhancements. LSD: Reality with Berkeley enhancements.