Date: Wed, 15 Dec 2004 13:42:52 -0600 From: Nikolas Britton <freebsd@nbritton.org> To: Rae Kim <z49x2vmq@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: How can I make a program keep running even after I logout? Message-ID: <41C093BC.5010306@nbritton.org> In-Reply-To: <2ede6f3204121510332f0c4a52@mail.gmail.com> References: <2ede6f3204121510332f0c4a52@mail.gmail.com>
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Rae Kim wrote: >I connect to my computer from school computer. > >I want to cvsup or/and portupgrade and logout but the program keep running? >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > Hi Rae, I asked this very same question back in ("Job Control") back in November, first thing to know is that the default for the csh shell is not to hangup background jobs when you exit the shell. here is all the meat from that tread: ###This is the way I thought up on my own Rae### $ ssh localhost Password: **** Last login: Mon Nov 22 06:13:59 2004 from localhost Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 5.3-RELEASE-p1 (SPECTRA) #0: Sat Nov 20 23:30:17 CST 2004 Welcome to FreeBSD! $ su Password: **** spectra# cvsup -g -L 2 /root/ports-supfile > /root/ports-supfile.log& [1] 71669 spectra# exit exit $ exit Connection to localhost closed. $ tail /root/ports-supfile.log Add delta 1.25 2004.11.21.22.03.48 marcus Edit ports/x11-toolkits/py-gnome2/Makefile Add delta 1.78 2004.11.20.17.18.17 kwm Edit ports/x11-toolkits/py-gnome2/distinfo Add delta 1.28 2004.11.20.17.18.17 kwm Edit ports/x11-toolkits/py-gnome2/pkg-plist Add delta 1.31 2004.11.20.17.18.17 kwm Updating collection ports-x11-wm/cvs Shutting down connection to server Finished successfully $ exit ---------------------- Presumably you've also nohup -ed the background job too....:-) anyway have a look at 'screen' to give you virtual terminals that you drop out of and back into when you want to. ----------------------- yes screen will do that, detach first before logout, then re-attach when you want o get back to that session. Also no need to background the job, as screen will just keep the job running after detach anyway.. ---------------------- ###This was the one I liked the most Rae### >From work: # nohup foobar >& foobar.log & Back home: # tail -f foobar.log Ruben -------------------- If all you want to do is inspect the output from your command, then simply use script(1) to save a transcript of the output. script(1) comes with the system. Use it like this: % cd /usr/ports/x11/xorg % script /tmp/make.out sudo make install And /tmp/make.out will contain a transcript of everything that appears on your screen during the course of doing that job. Cheers, Matthew ------------------- Thanks.... # nohup foobar >& foobar.log & ^^^^ ^^^ Why'd you do it like that, how is it diffrent from this way?: # nohup foobar > foobar.log & --------------- His example redirects both stdout and stderr to foobar.log, while yours only redirect stdout. (Note that ">&" is a csh-specific operator. The equivalent for a Bourne-shell derivative would be: nohup foobar > foobar.log 2>&1 & I.e. redirecting stdout to foobar.log and then redirecting file descriptor 2 (stderr) to wherever file descriptor 1 (stdout) goes to (foobar.log in this case.) When used with the nohup command I believe the redirection of stderr is unnecessary since the manpage for nohup(1) says "If standard error is a terminal, it is directed to the same place as the standard output."
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