Sets a time to be reminded that it's "time to leave." leave will remind you with a message at the command prompt five minutes, and then one minute, before the specified time. You'll be reminded again at the specified time and then every minute after until you either log out of that shell session or kill leave with kill -9
pid. Specify the time in the
hhmm format. Use + before
time to specify a relative time, hours, and minutes from the current time. Without any arguments, leave prompts you to enter a time in the same format.