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From: southard@unc.cs.unc.edu (Scott Southard)
Newsgroups: comp.unix.wizards
Subject: Setting process groups
Message-ID: <1765@unc.cs.unc.edu>
Date: Mon, 26-Oct-87 17:42:44 EST
Article-I.D.: unc.1765
Posted: Mon Oct 26 17:42:44 1987
Date-Received: Wed, 28-Oct-87 22:39:47 EST
Organization: CS Dept., U. of N. Carolina, Chapel Hill
Lines: 10

I am writing a program that creates several child processes, and at some
point I would like to kill all the children, but not the parent, with a
killpg() call.  How do I set the process group id of all the children to
the same id, but not to the id used by the parent?  Can I just pick a
process group id to assign to the children that is different than the
one used by the parent?  How can I determine what process group id's are
not in use?  Any help on this would be appreciated.

Scott Southard
decvax!mcnc!unc!southard