“Before there was Linux, before there was open source, there was
(and still is) an operating system called Unix that was robust,
stable and widely admired. It was also available under license to
anyone that wanted to use it, because it had been developed not by
a computer company, but by personnel at AT&T’s Bell Labs, which
for a time was not very aware of its status as the incubator of a
vital OS.“Mighty was the rise of that OS, and regrettably, so was the
waning of its influence. Happily, Unix was supplanted not only by
Windows NT, but also by Linux, the open source offshoot of
Unix…”