Sure, there is a number of ways to do it. setpgrp is not in (Perl's) POSIX, but it has setpgid. Doing that will have other consequences wrt SIGQUIT, SIGHUP etc. Probably not a problem in practice, though.

Come to think of it, system might also be close to what the OP is trying to do...

In reply to Re^4: Allowing user to abort waitpid by Anonymous Monk
in thread Allowing user to abort waitpid by lab007

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