Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!charyb!dan
From: dan@kfw.COM (Dan Mick)
Newsgroups: comp.unix.internals
Subject: Re: suspension of long process
Message-ID: <1990Oct4.042038.25382@kfw.COM>
Date: 4 Oct 90 04:20:38 GMT
References: <3940@ruuinf.cs.ruu.nl>
Reply-To: dan@kfw.com (Dan Mick)
Organization: KFW Corporation, Newbury Park, CA
Lines: 17

In article <3940@ruuinf.cs.ruu.nl> wgsiemel@praxis.cs.ruu.nl (Willem Siemelink) writes:
>I can do this by hand by typing ^Z on the running process followed by 'bg' and
>'fg' but that is only when I'm on the keyboard at the very moment.  Obviously
>that isn't good enough.  I've had a suggestion using 'kill' but I couldn't
>figure it out.  ('kill -3 <pid> gives a core-dump but I can't get it started
>again.)

The fact that you can ^Z and bg/fg means you must be on a BSD-derived 
system with job control; you can send the same signals to the process with

kill -TSTP <pid>  

to stop the process, and 

kill -CONT <pid>

to resume it.