Related:

• Lions Book n. "Source Code and Commentary on Unix level 6", by John Lions.
  The two parts of this book contained (1) the entire source listing of the Unix Version 6 kernel, and (2) a commentary on the source discussing the algorithms....
• UTSL: // [UNIX] n. On-line acronym for `Use the Source, Luke' (a pun on Obi-Wan Kenobi's "Use the Force, Luke!
  in "Star Wars") --- analogous to {RTFS} (sense 1), but more polite....
• 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)....
• UTSL // n. [Unix] On-line acronym for `Use the Source, Luke' (a pun on Obi-Wan Kenobi's "Use the Force, Luke!
  in "Star Wars") -- analogous to RTFS (sense 1), but more polite....
• amizdat: [Russian, literally "self publishing"] n.
  The process of disseminating documentation via underground channels....
• 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....
• Linux /lee'nuhks/ or /li'nuks/, not /li:'nuhks/ n.
  The free Unix workalike created by Linus Torvalds and friends starting about 1991....
• 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....
• back door n. [common] A hole in the security of a system deliberately left in place by designers or maintainers.
  The motivation for such holes is not always siniste...