UNIX-PC Unix version (2 or 3)

[Bill Mayhew]

I agree with Steve Friedl that much of the so-called Unix on the
Unix PC is Sys V R0.  The release 3.5 and 3.51 seem to incorporate
quite a bit of stuff from Sys V R1.  There is also a lot of
BSD-like stuff in there too -- take for instance the presence of
more in place of pg (as the first that comes to mind).  I notice
that AT&T is careful to say in the manuals that the UNIX PC
software passes SYSVID for 5.2; they avoid saying it *is* 5.2.

It is annouying  that the dates on most of the system files are at
Jan 1, 1970 so that the incremental back-up won't back them up.
Tsk tsk.  Also helps hide how old some of the files are too..

--Bill