at commands - lost at reboot or not?

[Nick Brennan_2]

Are at commands stored in memory and lost at reboot, or stored in some cron-related file somewhere on the system?

Easy points for someone.........!

TIA

[Massimo Bianchi]

Hi,
they are stored in /var/spool/cron/atjobs

I think that they survive a reboot :)


Massimo

[Sundar_7]

Hey Nick,

at commands are not lost.

They are stored in /var/spool/cron/atjobs/ directory with the JOBID as the filename.

Use at -l to list the at jobs scheduled

-- Sundar.

[Nick Brennan_2]

Thanks guys, sad I had to ask.....

[Jeff Schussele · Accepted solution]

Hi Nick,

Yes, they'll survive. All atjobs result in an entry be written into /var/adm/cron/queuedefs.
man queuedefs
for further info.

Rgds,
Jeff

[Pete Randall]

Nick,

From the man page:

"The at and batch commands schedule jobs for execution by the cron daemon (see cron(1M))."

- and -

"An at or batch job consists of a two-part script stored in /var/spool/cron/atjobs that can be executed by the POSIX shell."

The jobs thus scheduled will survive a reboot just as any cron job does.


Pete

[Nick Brennan_2]

Yes, had realised it was related to cron, but the man pages don't appear to clearly define whether or not the pages are cleared out at boot time, and it's one of those questions...