Queue, check, or delete a job that needs to be scheduled for execution.

Options

Here are some options for at command:

Option	Description
-q queue	Determine the priority of the queue.
-m	Send a message to the user when the job is complete.
-M	Do not send mail to the user.
-f file	Read the job from a file instead of standard input.
-t time	Execute the job at a certain time. The format can be: [[CC]YY]MMDDhhmm[.ss]
-l	This is an alias for atq.
-r	This is an alias for atrm.
-d	This is an alias for atrm.
-b	This is an alias for batch.
-v	Display the time when the job will be executed before reading the job.
-c	Output the list of jobs to standard input.

Operands

Time

Here are some time operands for at command:

Operand	Description
midnight	12:00 am.
noon	12:00 pm.
now	Current day and time.

Date

Here are some date operands for at command:

Operand	Description
today	Current day.
tomorrow	The next day of the current day.

Increment

Here are some increment operands for at command:

Operand	Description
+ N minute(s)/hour(s)/day(s)/week(s)/month(s)/year(s)	Next N units of selected time.
next minute(s)/hour(s)/day(s)/week(s)/month(s)/year(s)	Next 1 unit of selected time.

Examples

Run a Command After Two Minutes

                    
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                          # Copy paste the following two lines one by one
at now + 2 minutes
wall 'The server will be shutting down soon!'
Ctrl + D    # Press Ctrl + D

After two minutes:

Run a Command After A Minute

                    
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                          echo 'wall Wall call from job file' > job_file
at now + 1 minute -f job_file

After a minute:

References AT(1P)

Buy me a coffee

76. Job Scheduling - at

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