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We have a script (generator) that is creating a series of at jobs. The at jobs fire another PHP script. The generator script loops through and does something like this:

exec('/usr/bin/at 5:00 May 11, 2015 -f ' . $filename);

$filename looks something like this:

php /some-location/some-script.php arg1 arg2 arg3

It's working awesome, we love it. What I'm trying to figure out is how to grab the job id and the file name in /var/spool/at/filename from the generator script as it runs so I can store it in case we need to alter/cancel after they been scheduled.

Does anyone have any idea how I can grab that info from the exec() that's creating the at Job?

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According to the documentation on PHP exec():

If the output argument is present, then the specified array will be filled with every line of output from the command.

Does your version of at declare the job number?

$ echo /bin/true | at now + 1hour job 1 at Fri Apr 24 12:00:00 2015

If so, you might then use explode() with a space delimiter to get the job number. 

<?php // Remember to redirect stderr to stdout with "2>&1" $command = "echo /bin/true | at now + 1hour 2>&1"; $at_message = explode(" ", exec($command, $output, $return_value)); $job_number = $at_message[1]; echo $job_number; ?>
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  • it does not use a job number - i really need the filename in var/spool/at. thanks for the info on exec though, i'm sure that'll come in useful Commented Apr 28, 2015 at 12:21

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