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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.unix.questions
Subject: Re: onintr, trap, etc.
Message-ID: <15683@smoke.brl.mil>
Date: 3 Apr 91 00:21:38 GMT
References: <1991Apr1.201415.5305@engin.umich.edu>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 13

In article <1991Apr1.201415.5305@engin.umich.edu> mjo@ais.org writes:
-I am trying to write a script that will only run when I receive a
-hangup signal (i.e. when I am forcibly disconnected).  
-#!/bin/sh
-#deathtrap -- will run these commands if I get HUPped
-trap hangupscript 0
-When I run this interactively with:
-% nohup deathtrap &
-The script wants to run immediately.

Of course it does -- trap #0 means upon EOF, which occurs at the
end of the "deathtrap" shell script.  Try trap #1, and make sure
the "deathtrap" script doesn't terminate except upon the trap.