[TUHS] Tree of late BSD releases
dds at aueb.gr
Mon Jun 16 00:46:44 AEST 2014
For reconstructing Unix history on a single repository , I'd need to
represent the branches, merges, and chronological sequence of the late
BSD releases (after 4.3). However, I've found on the internet some
conflicting and simplistic information, so I'd welcome your input on how
to straighten things up.
First, consider this widely reproduced BSD family tree . It has
4.4BSD-Encumbered derive from a line that includes Net/1, which was
freely redistributable. Wouldn't it be clearer to create two branches,
one with distributions free of AT&T code (4.3 BSD Net/1, 4.3 BSD Net/2,
4.4 BSD Lite1, 4.4 BSD Lite2) and one with full distributions (4.4 BSD,
...)? On which side would Tahoe and Reno stand?
Also, the same tree  shows 4.4 BSD having as its ancestor 4.3 BSD
Net/2, whereas another tree depicted on Wikipedia  has shows 4.4 BSD
and 4.3 BSD Net/2 having as their ancestor 4.3 BSD Reno. What's the
Finally, I have a conflict with release dates. Wikipedia gives the
following dates for Tahoe and Net/1 :
4.3 BSD Tahoe June 1988
4.3 BSD Net/1 June 1989
However, looking at time-stamp of the newest files available under the
corresponding directories in the CSRG CD-ROMs  I find the opposite order:
cd2/net.1/sendmail/src/util.c 1989-01-01 12:15:58
cd2/4.3tahoe/usr/src/sys/tahoevba/vx.c 1989-05-23 13:47:43
What's the actual time sequence, and what's the corresponding genealogy?
PS Thank you all for the help you've provided so far.
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