>… The true pain comes later when it's time to send a signal. Maybe you want to shut down a child process. >Do you kill(pid, signal)? Maybe you do kill(pid, 9)

>… The true pain comes later when it's time to send a signal. Maybe you want to shut down a child process. >Do you kill(pid, signal)? Maybe you do kill(pid, 9). >Do you know what happens when pid is -1? …