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From: v.wales@ucla-locus@sri-unix.UUCP
Newsgroups: net.unix-wizards
Subject: Re: question on csh
Message-ID: <12275@sri-arpa.UUCP>
Date: Mon, 3-Oct-83 15:00:32 EDT
Article-I.D.: sri-arpa.12275
Posted: Mon Oct  3 15:00:32 1983
Date-Received: Thu, 6-Oct-83 04:06:11 EDT
Lines: 30

From:            Rich Wales <v.wales@ucla-locus>

	Can anyone tell me how to supress the

			[1] [12345]
			[1] +Done

	messages when running a program in the background from a csh
	script?

I don't know any way to tell /bin/csh not to produce the above output,
but you can throw said noise away by enclosing the background command
in parentheses (causing it to be executed by a subshell), then adding
">& /dev/null" to it (causing the error output from said subshell to
be discarded).

For example, instead of:      blah &
say the following:            (blah &) >& /dev/null

Note that the background symbol ("&") must be INSIDE the parentheses.

The redirection to /dev/null will NOT affect the output of the command
itself, by the way -- all it will do is discard the messages produced
by the subshell itself.

	The noise seems to be lower when using "sh" in the non-
	interactive mode.

/bin/sh spits out the process ID when you fork a background process,
but it doesn't inform you when the process terminates.