music

OSdata.com

at

summary

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

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

free book on UNIX/Linux System Administration Teach Yourself UNIX/Linux System Administration and Shell Programming free computer programming text book project table of contents If you like the idea of this project, then please donate some money. more information on donating

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.

---