1. Incompatible Time-sharing System, an influential though highly
idiosyncratic operating system written for PDP-6s and PDP-10s at MIT
and long used at the MIT AI Lab. Much AI-hacker jargon derives from
ITS folklore, and to have been `an ITS hacker' qualifies one
instantly as an old-timer of the most venerable sort. ITS pioneered
many important innovations, including transparent file sharing
between machines and terminal-independent I/O. After about 1982, most
actual work was shifted to newer machines, with the remaining ITS
boxes run essentially as a hobby and service to the hacker community.
The shutdown of the lab's last ITS machine in May 1990 marked the end
of an era and sent old-time hackers into mourning nationwide (see
{high moby}). There is an ITS home page.
2. A mythical image of operating-system perfection worshiped by a
bizarre, fervent retro-cult of old-time hackers and ex-users (see
{troglodyte}, sense 2). ITS worshipers manage somehow to continue
believing that an OS maintained by assembly-language hand-hacking
that supported only monocase 6-character filenames in one directory
per account remains superior to today's state of commercial art
(their venom against {Unix} is particularly intense). See also {holy
wars}, {Weenix}.
[glossary]
[Reference(s) to this entry by made by: {alt}{cookie monster}{CTSS}{daemon}{DDT}{deserves to lose}{elder days}{EMACS}{film at 11}{high moby}{holy wars}{operating system}{PDP-10}{security through obscurity}{TOPS-10}{TWENEX}{Unix conspiracy}{Weenix}]