Unix and BSD
Unix was originally developed at AT&T Bell Labs and was not a freely available product. But since it was licensed to universities for a nominal amount, it resulted to an explosion of creativity wherein programmers built on each other’s work. The most significant source of Unix development outside Bell Labs was the University of California at Berkeley in which Berkeley’s Computer Science Research group folded their own change and other contributions into a series of release. Berkley Unix was then known as BSD (Berkley Standard Distribution) and included a rewritten file system, virtual memory support, networking capabilities and a series of utilities. But in 1984, Unix was sold as a commercial product through the Unix System
21 May 2008 editor