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

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

perl v5.40.0                                       2024-10-20                                 Proc::Killfam(3pm)

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

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