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summary

����This subchapter looks at at, a UNIX (and Linux) command.

����at is used to schedule a particular job at a particular time.

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at

����This subchapter looks at at, a UNIX (and Linux) command.

����at is used to schedule a particular job at a particular time.

example

����Type at midnight, followed by ENTER or RETURN.

����$ at midnight

����You may see the at> prompt (on Mac OS X, there is no prompt).

����Type a single command, followed by ENTER or RETURN.

����$ who > who.out

����Type one command per line.

����When finished, hold down the CONTROL key and then the D key (written ^d) to exit at.

����job 1 at Fri Jul 13 00:00:00 2012
����$

����You will see a job number and the time it will run. This job will run all of the commands you entered.

removing an at job

����Type atrm (for at remove), followed by the job number to remove an existing at job.

����$ atrm 1

timing

����You can name a specific time using the YYMMDDhhmm.SS format.

����You can also specify noon, midnight, or teatime (4 p.m.).

����If the time has already passed, the next day is assumed.

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