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On Friday, 23 May 2003 at  0:15:08 +0530, Ram Chandar wrote:
>
>
> I feel the BSDs are not properly represented here.
>
> http://www.opensource.org/timeline.png

Definitely.  Neither, for that matter, is the original Research UNIX.
System III and System V are no more based on the Seventh Edition
(called Version 7 there) than 4BSD is.  They've omitted that System
III was really based on PWB, which derived from the Sixth Edition with
some additions from the Seventh Edition.  Also, 4BSD was based on VAX
hardware, not the PDP 11, and it was derived from Research UNIX by way
of a short-lived version called 32V and then from 3BSD.  There's a
much better overview in "The Design and Implementation of the 4.4BSD
Operating System", page 5, and also at
http://www.levenez.com/unix/history.html.

Greg
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