# Fork a unix process...
my $pid;
if($pid = fork) {
    print STDERR "parent pid=$$ child pid=$pid\n";
}elsif (defined $pid) {
    print STDERR "child pid=$$ pid=$pid\n";
    # Must do setpgrp as child for nohup and job control stuff...
    setpgrp(0, $$);
    exec $unixcmd || die "Bad exec $!";
}
kill 'INT', $pid;