SemiOT: filePro on FreeBSD chown gotcha

[Fairlight]

Simon--er, no...it was Jay Ashworth--said:
> 
> I believe that Solaris, the followup to SunOS -- it was effectively
> SunOS 5 -- was one of the Unices that was "dual-universe": it would
> allow you to comfortably run apps that expected either set of
> semantics, depending on (among other things) how your $PATH was set.

Oh, that way?  It has a populated /usr/ucb, yes.  It also has different
variations of POSIX and XOpen standards.  There's a whole xpg4 branch that
offers some of the more common functionality (grep -f for the file
operation to get your patterns is only available in the xpg4 version, not
in the others).  It has a lot under the hood in various places.  Try 'man
xpg4' sometime and you get a whole list of standards it supports.

> I remember that the dual-universe systems handled semantic items like
> what we're talking about (chown(2) semantics), but I don't remember
> how; no one's cared for about 10 years.

Apparently they care again.  :)

m->
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