note snoopy If you already know the process id(s), and own the processes, the [doc://kill] builtin function might be of use. <p> From the doco: <pre> kill SIGNAL, LIST .... $cnt = kill 1, $child1, $child2 kill 9, @goners; If SIGNAL is zero, no signal is sent to the process, but the kill(2) system call will check whether it's possible to send a signal to it (that means, to be brief, that the process is owned by the same user, or we are the super user). This is a useful way to check that a child process is alive. </pre> 806060 806060