A colleague has come up with a problem that I can't explain and I hope that a
wizard mightier than those to be found locally might be able to help.
The problem is this: my colleague writes sh/csh/tcsh shell scripts to do
various things with his mail. At seemingly random intervals, executing
/usr/ucb/mail causes the shell script to silently exit.
I looked at the sources to each of sh/csh/tcsh and could find no reason for
this behavior. It's as though mail were comitting patricide.
Any help appreciated.