From: utzoo!decvax!harpo!duke!unc!smb Newsgroups: net.unix-wizards Title: Re: disappearing signal? Article-I.D.: unc.3778 Posted: Mon Aug 2 01:48:51 1982 Received: Mon Aug 2 04:31:09 1982 Re: DEAN@USC-ECL's problem -- it's due to a "feature" of the C shell. While your program is running, the tty's pgrp is assigned to the child process created by csh. When it terminates, csh regains control of the tty. HUP signals are sent only to the group that controls the tty; thus, your orphan process never receives it. Ain't progress wonderful....