What is UNIX anyway?
UNIX is the oldest living operating system, it was first written by KEN THOMPSON and DENNIS RITCHIE6 when they were working at AT&T, it could be considered as the grand daddy of all operating systems in use today. AT&T licensed UNIX to many companies and universities, who in turn developed their own versions of it, which resulted to many different UNICES, these UNICES fall into the two wide categories of BSD UNIX and AT&T UNIX. Efforts to standardize all these UNICES resulted in the POSIX standard, GNU/LINUX is very POSIX compliant.
UNIX is an operating system that developed on mainframe computers, beginning in the late 1960’s. It is very good at doing many things at once, and so is popular in environments (like universities and research laboratories) where many people need to be working on the same computer at the same time. For a more detailed answer, find one of the UNIX history sites on the Web, such as this one.
