🚀 go-pugleaf

If you are talking about DYNIX (4.2BSD), this is not true; the rename(2)
system call is used and it is atomic. Assuming you aren't using the mv(1) in
the att universe, of course.

If you are talking about DYNIX/ptx (SVR3.2), then you are correct. There is
no rename(2) call, mv(1) is not atomic (it uses link(2) and unlink(2)), and
you are SOL. That's just the way System V works.

[Editorial Comment: Companies that give the same name (or a trivial variation,
like the version code) to radically different operating systems should be
lynched by their justifiably outraged customers. That includes the old Gould,
which had who-knows-how-many different things all called UTX; Sun, which last
I knew is going to call their SVR4 port "SunOS 5.0"; and many others. Sequent
chose to walk a very well trodden path, and I know of other companies that
plan to follow.]

<csg>