Brad Hughes <brad/[EMAIL PROTECTED]> wrote:
> Brian Tillman wrote:
> > VMS IS NOT a Unix descendent.
> Certainly Unix predates VMS. And Multics predated Unix. The
> TOPSes predated VMS, but I'm not sure you could say VMS is
> strictly descended from TOPS. Did Multics and TOPS share a
> common ancestor?
> Does anyone have an OS genealogy tree...
I certainly don't know of any "Twurp's Peerage" (sic) for operating
systems. But if VMS is descended from any OS it's RSX. Anyone looking for
good examples of "second system effect" should compare these two. Of
course, this means Windows NT is an example of "third system effect", since
Dave Cutler was the architect of all three. But NT is really sort of a
bastard nephew to the other two, and gets most of its features from the
"bend sinister" side of the family.
Tom Wyant
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