Where Did UNIX Come From And Why Are There Different Versions Of UNIX?
Beginning of paper
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The first efforts at developing a multi-user, multi-tasking operating system
were begun in the 1960's in a development project called MULTICS. While working
for Bell Telephone Laboratories in 1969 and 1970, Ken Thompson and Dennis
Ritchie began to develop their own single-user, multi-tasking smal ....
Middle of paper
.... to market UNIX in the 1970's, though they did share this
operating system with many universities - most notably UC-Berkeley. This led to
some of the variations in UNIX which we see today. After the divestiture of the
Bell System, their parent company, AT&T, became much more interested in
marketing a commercial version of UNIX. And today we see that many companies
have now licensed their own version:
AT&T's System V,
Versions of System V such as SCO's Xenix and IBM's AIX
Berkel ....
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