Where Did Unix Come From And Why Are There Different Versions Of Unix?

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Kylie J


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July 30, 2013








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Their initial goal was simply to operate their DEC PDP machines more effectively. In 1971, UNIX became multi-user and multi-tasking, but it was still just being developed by a small group of programmers who were trying to take advantage of the machines they had at hand. (In other words, this operating system that they were developing did not run on any machine made by Bell!) In 1973, Dennis Ritchie rewrote the UNIX operating system in C (a language he had developed...
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For legal reasons, Bell Labs was not able 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...
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