my %kid;
for (@commands) {
    defined(my $cpid = fork) or sleep 1, redo;
    $cpid and $kid{$cpid} = 1, next; # parent
    %kid = ();                       # child
    exec '/bin/bash', '-c', $_;      # thanks, ikegami
    exit 1;
}
delete $kid{+wait} while %kid;
print "@{[times]}\n";