Proc::Killfam - kill a list of pids, and all their sub-children

 use Proc::Killfam;
 killfam $signal, @pids;

killfam accepts the same arguments as the Perl builtin kill command, but, additionally, recursively searches the process table for children and kills them as well.

killfam 'TERM', ($pid1, $pid2, @more_pids);

kill, signal