bsd man page for leave

LEAVE(1)						      General Commands Manual							  LEAVE(1)

NAME
       leave - remind you when you have to leave

SYNOPSIS
       leave [ [+]hhmm ]

DESCRIPTION
       Leave  waits  until the specified time, then reminds you that you have to leave.  You are reminded 5 minutes and 1 minute before the actual
       time, at the time, and every minute thereafter.	When you log off, leave exits just before it would have printed the next message.

       The time of day is in the form hhmm where hh is a time in hours (on a 12 or 24 hour clock).  All times are converted to a  12  hour  clock,
       and assumed to be in the next 12 hours.

       If the time is preceeded by `+', the alarm will go off in hours and minutes from the current time.

       If  no  argument is given, leave prompts with "When do you have to leave?". A reply of newline causes leave to exit, otherwise the reply is
       assumed to be a time.  This form is suitable for inclusion in a .login or .profile.

       Leave ignores interrupts, quits, and terminates.  To get rid of it you should either log off or use ``kill -9'' giving its process id.

SEE ALSO
       calendar(1)

3rd Berkeley Distribution					    May 7, 1986 							  LEAVE(1)