What's the best way to send a signal to all members of a process group?

Question

I want to kill a whole process tree. What is the best way to do this using any common scripting languages? I am looking for a simple solution.

Answer 1

You probably want one of pkill or pgrep, from their man page:

-g, --pgroup pgrp,...

Only match processes in the process group IDs listed. Process group 0 is

translated into pgrep's or pkill's own process group.

-G, --group gid,...

Only match processes whose real group ID is listed. Either the numerical or

symbolical value may be used.