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Path: utzoo!david
From: david@utzoo.UUCP (David Trueman)
Newsgroups: general
Subject: running background commands (nohup and ampersand) 
Message-ID: <3980@utzoo.UUCP>
Date: Fri, 22-Jun-84 16:55:23 EDT
Article-I.D.: utzoo.3980
Posted: Fri Jun 22 16:55:23 1984
Date-Received: Fri, 22-Jun-84 16:55:23 EDT
Organization: U of Toronto Zoology
Lines: 17

The "nohup" command (used to run a command in the background and get your
prompt back right away) has been changed.  It now enforces the previously
voluntary restriction of running one such command at a time.

Now, you can safely run a second command some time after the first; if the
first has not finished, "nohup" will complain and refuse to run the second.
The correct method for running a command in the background remains:

	% nohup ms -p lpr file1 file2 &

where "nohup" and "&" are obligatory and the "ms -p lpr file1 file2" could
be any normal command.

The ampersand (&) must NEVER be used without "nohup".
-- 
				David Trueman @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!david