atd man page

atd — run jobs queued for later execution


atd [-l load_avg] [-b batch_interval] [-d] [-f] [-s]


atd runs jobs queued by at(1).


Specifies a limiting load factor, over which batch jobs should not be run, instead of the compile-time choice of 0.8. For an SMP system with n CPUs, you will probably want to set this higher than n-1.
Specify the minimum interval in seconds between the start of two batch jobs (60 default).
Debug; print error messages to standard error instead of using syslog(3). This option also implies -f.
Run atd in the foreground.
Process the at/batch queue only once. This is primarily of use for compatibility with old versions of at; atd -s is equivalent to the old atrun command.


atd won't work if its spool directory is mounted via NFS even if no_root_squash is set.


/var/spool/at The directory for storing jobs; this should be mode 700, owner root.

/var/spool/at/spool The directory for storing output; this should be mode 700, owner root.

/etc/at.allow, /etc/at.deny determine who can use the at system.

See Also

at(1), at.deny(5), at.allow(5), cron(8), crontab(1), syslog(3).


The functionality of atd should be merged into cron(8).

Referenced By

at(1), at.allow(5), atrun(8).

Explore man page connections for atd(8).