Path: utzoo!mnetor!tmsoft!torsqnt!hybrid!scifi!bywater!uunet!fdls!dougw
From: dougw@fdls.odag.or.gov (Doug Walker)
Newsgroups: comp.unix.questions
Subject: Re: Background processes on logout
Message-ID: <350@fdls.odag.or.gov>
Date: 21 Feb 91 23:28:49 GMT
References: <91051.180110F66204@BARILVM.BITNET> <1991Feb20.211507.28547@ux1.cso.uiuc.edu>
Organization: OR Dept. of Agric., F&D-Lab Svcs, Salem, OR
Lines: 30
A-Internet: dougw@fdls.odag.or.gov
B-Uucp: uunet!fdls!dougw
C-Phone: (503) 378-3790

In <1991Feb20.211507.28547@ux1.cso.uiuc.edu> phil@ux1.cso.uiuc.edu (Phil Howard KA9WGN) writes:

>F66204@BARILVM.BITNET (Shaul Wallach) writes:

>>   Please excuse this beginner's question. Is there any way for a
>>user to log out of a UNIX system (say AIX/6000) while leaving
>>background processes active? My experience seems to be that the
>>logout command kills all background processes, something I want
>>to prevent.

The most reliable method we have found is to submit the program as a job
through at/batch.  Then, you can logout with no impact on the ultimate
completion of the job.  For example, let's say you have a program myprog that
is designed to operate in the background.  Then, the following line will
submit the program to at to run whenever the system resources are available:

     myprog | batch

One caveat is that you would have to have permission to use the at facility.
We have chosen to permit all users to use at by having a file
/usr/lib/cron/at.deny with zero length and have removed the file
/usr/lib/cron/at.allow.  Do a man on at to get the particulars for your
system.

Hope this helps.
-- 
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Doug Walker               uunet!fdls!dougw  -or-  dougw@fdls.odag.or.gov
Oregon Department of Agriculture, Salem, Oregon           (503) 378-3790