Related:

• 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&...
• 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....
• 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....
• Slowlaris /slo'-lahr-is/ n. [Usenet; poss. from the variety of sloth called a "slow loris".
  The variant `Slowlartus' is also common, related to LART] Common hackish term for Solaris, Sun's System VR4 version of UNIX that came out of the standardization wars of the early 1990s....
• UNIX:: /yoo'niks/ [In the authors' words, "A weak pun on Multics"] n.
  (also `Unix') An interactive time-sharing system invented in 1969 by Ken Thompson after Bell Labs left the Multics project, originally so he could play games on his scavenged PDP-7....
• BSD /B-S-D/ n. [abbreviation for `Berkeley Software 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....
• Devil Book: n. "The Design and Implementation of the 4.
  3BSD UNIX Operating System", by Samuel J. Leffler, Marshall Kirk McKusick, Michael J....
• Unix /yoo'niks/ n. [In the authors' words, "A weak pun on Multic
  very early on it was `UNICS'] (also `UNIX') An interactive time-sharing system invented in 1969 by Ken Thompson after Bell Labs left the Multics project, originally so he could play games on his scavenged PDP-7....
• 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....