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From: rees@pisa.ifs.umich.edu (Jim Rees)
Newsgroups: comp.sys.apollo
Subject: Re: How do you create a persistent background process from DM?
Message-ID: <1990Sep12.131836@pisa.ifs.umich.edu>
Date: 12 Sep 90 17:27:55 GMT
References: <2411@dover.sps.mot.com>
Sender: usenet@terminator.cc.umich.edu (usenet news)
Reply-To: rees@citi.umich.edu (Jim Rees)
Organization: University of Michigan IFS Project
Lines: 21

In article <2411@dover.sps.mot.com>, talent@spanky.sps.mot.com writes:
  I need to start a background process from a display manager window that
  will continue running after logout.  I've tried nohup, nice, and &.
  The process is started from a /bin/csh script running in a DM window.

This has worked at various times in the past but seems to be broken again
now.

I have a program I use instead of the 'nohup' builtin.  It contains the
following code:

	setpgrp(0, getpid());

	signal(SIGHUP, SIG_IGN);
	ioctl(0, TIOCNOTTY, 0);

	maxfds = getdtablesize();
	for (i = 0; i < maxfds; i++)
		close(i);

This works fine on sr10.2.