[comp.unix.xenix] Xenix csh doesn't support "unsetenv" ... so how do I do that?

alan@tree.uucp (Alan Turing) (12/26/89)

I'm embarrassed to ask this, but how (short of logging out!) do I remove an
environment variable from the Xenix csh?  unsetenv doesn't work with xenix.
I've spent about half an hour now trying to find the answer via RTFM and
experimentation and I'm getting real upset.  Help!  Please reply via email.