On Sat, Oct 21, 2023 at 11:37 AM Paul Ruizendaal <pnr@planet.nl> wrote:

An interesting set of videos indeed, although I wish they were not all chopped up in 5 minute segments.

The alternative nowadays is for YouTube to chop videos up themselves with commercials.

The below site has a very nice summary of Xenix at Microsoft (I’ve linked it a couple of times before):
http://seefigure1.com/2014/04/15/xenixtime.html

By this time, there was growing retail demand for Xenix on IBM-compatible personal computer hardware, but Microsoft made the strategic decision not to sell Xenix in the consumer market; instead, they entered into an agreement with a company called the Santa Cruz Operation to package, sell and support Xenix for those customers.

That's not entirely true. The first personal computer I used was an IBM PC/AT, and I bought MS-branded Xenix (System III) for it. It was a box full of floppies, and it came with the MS C compiler (CL.EXE etc.) which could compile for Xenix or cross-compile for MS-DOS. That way I could write command-line programs on Xenix and deliver them for DOS.

In a way it is the same dynamic that kept C89 and Bash in place for so long: people know it, it is good enough and it works everywhere.

C89 has plenty of obvious successors; bash does not.

Seeing the Cutler interviews reminded me of the old joke that there are only two operating systems left: Unix and VMS (Linux being Unix-family and Windows being VMS-family).

OS/360 (now in the form of z/OS) is still very much with us. z/OS is Posix-certified, but it is fairly distant from Linux, *BSD, or Solaris. (It is not to be confused with Linux running on System Z virtualized.)