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The external leave command provides a reminder service. You inform leave when to notify you to leave. Then leave waits until five minutes before that time, then it reminds you to leave. It reminds you again one minute before you should leave. If you are still logged on, leave reminds you at the specified time and every minute thereafter. If you have logged off, leave exits before displaying another reminder.
The leave command ignores the interrupt, quit, and terminate signals. To remove it from execution, log off the system or perform a kill -9 pid, where pid is the process ID for the leave process. To get the PID of leave use the ps command.
Some users place the leave command in their .login or .profile files without any arguments. This causes leave to prompt them for a time during the login process.
Following is the general format of the leave command.
leave [ [+]hhmm ]
The following options may be used to control how leave functions.
|hhmm||Format to specify the time of day, where hh represents hours on a 12- or 24-hour clock and mm represents minutes. The hours are converted into a 12-hour clock and assumed to be in the next 12 hours. For example, if it is currently 9 A.M. and you specify 0500, leave notifies you at 5 minutes to 5:00 P.M.|
|+hhmm||Forces relative time interpretation. Instead of being notified at a certain time, the plus forces leave to send you the alarm after hh hours and mm minutes have passed.|
|If you do not specify a time option, leave prompts you with "When do you want to leave?" If you press Return, leave exits immediately. If you reply, leave assumes the input is a time and verifies it is valid.|
Refer to the calendar and mail commands
You can use the leave command to remind you when you need to leave for important meetings, like lunch with your girlfriend or wife. It is most often used to remind users when to leave to go home. In our frenzy to work 16 hours a day we often forget when to leave our terminals. The leave program is a simple yet helpful reminder service.
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