What operating system does unix refer to?
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Unix is a multi-user, multi-process computer operating system that supports multiple processor architectures and is classified as a time-sharing operating system, first developed by Ken Thompson, Dennis Ritchie, and Douglas McIlroy at AT&T Bell Labs in 1969.
Unix is a multi-user, multi-process computer operating system derived from AT&T Unix, which was developed at AT &T Bell Labs in the 1970s.
UNIX is a powerful multi-user, multitasking operating system that supports multiple processor architectures and is classified as a time-sharing operating system, first developed by Ken Thompson, Dennis Ritchie, and Douglas McIlroy at AT&T Bell Labs in 1969.
Currently trademarked by the International Open Standards Organization, UNIX can only be used by UNIX systems that match a single UNIX specification, otherwise it can only be called UNIX-like.
extended information
History of Unix
In 1965, Bell Labs joined a joint effort between General Electric and MIT to build a multi-user, multi-processor, multi-level MULTICS operating system.
It was not until 1969 that MULTICS was halted because work was proceeding too slowly. Ken Thompson (later known as the father of UNIX) already had a program called Star Trek running on GE-635 machines.
But he was slow to react and happened to spot an unused PDP-7 (Digital's mainframe), and Ken Thompson and Dernis Ritchie ported Star Trek programs to PDP-7.
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