In message <20001019103449.A1537@starling>, Ben Collver writes:
>Someone posted modifying /etc/profile as a solution to working around
>shell-specific ways to clear the screen at logout.
>
>I was pointing out that /etc/profile is shell specific.
>
>My unanswered question was: what is signal 0?
>

There is none; it's just a mechanism that the shell uses to let you 
specify commands to execute when it exits.


		--Steve Bellovin