ircII help: set notify_on_termination
Usage: SET NOTIFY_ON_TERMINATION [ON|OFF|TOGGLE] When ON, all EXEC'ed processes will inform you when they exit. You will be told which process is exiting and the reason it exited. If termination was normal, you will receive the exit status code. If termination was by signal, you will be told which signal. If OFF, you will not be informed when processes exit.