Related:

• humma // excl. A filler word used on various `chat' and `talk' programs when you had nothing to say but felt that it was important to say something.
  The word apparently originated (at least with this definition) on the MECC Timeshare System (MTS, a now-defunct educational time-sharing system running in Minnesota during the 1970s and the early 1980s) but was later sighted on early Unix systems....
• CTSS: /C-T-S-S/ n. Compatible Time-Sharing System. An early (1963) experiment in the design of interactive time-sharing operating systems, ancestral to {{Multics}}, {{UNIX}}, and {{ITS}}.
  The name {{ITS}} (Incompatible Time-sharing System) was a hack on CTSS, meant both as a joke and to express some basic differences in philosophy about the way I/O services should be presented to user programs....
• 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....
• GCOS:: /jee'kohs/ n. A {quick-and-dirty} {clone} of System/360 DOS that emerged from GE around 1970
  originally called GECOS (the General Electric Comprehensive Operating System)....
• crool: /skrool/ [from the pioneering Roundtable chat system in Houston ca.
  1984; prob. originated as a typo for `scroll'] n. The log of old messages, available for later perusal or to help one get back in synch with the conversation....
• foo /foo/ 1. interj. Term of disgust. 2. [very common] Used very generally as a sample name for absolutely anything, esp.
  programs and files (esp. scratch files). 3. First on the standard list of metasyntactic variables used in syntax examples....
• alker system: n. British hackerism for software that enables real-time chat or {talk mode}.
  -- The AI Hackers Dictionary...
• 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....
• can: vt. To abort a job on a time-sharing system. Used esp.
  when the person doing the deed is an operator, as in "canned from the {{console}}"....