07-31-2010
To use at, the at RPM package must be installed, and the atd service must be running.
To determine if the package is installed, use the rpm -q at command.
If it not installed, you need to install the at RPM, i.e. rpm -Uvh ....
To determine if the service is running, use the command /sbin/service atd status.
Last edited by fpmurphy; 07-31-2010 at 10:29 AM..
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ATD(8) Linux Programmer's Manual ATD(8)
NAME
atd - run jobs queued for later execution
SYNOPSIS
atd [-l load_avg] [-b batch_interval] [-d] [-s]
DESCRIPTION
atd runs jobs queued by at(1).
OPTIONS
-l 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.
-b Specifiy the minimum interval in seconds between the start of two batch jobs (60 default).
-d Debug; print error messages to standard error instead of using syslog(3).
-s 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. A script invoking atd -s is installed as /usr/sbin/atrun for backward compatibility.
WARNING
atd won't work if its spool directory is mounted via NFS even if no_root_squash is set.
FILES
/var/spool/at The directory for storing jobs; this should be mode 700, owner daemon.
/var/spool/at/spool The direcotry for storing output; this should be mode 700, owner daemon.
/etc/at.allow, /etc/at.deny determine who can use the at system.
SEE ALSO
at(1), atrun(1), cron(8), crontab(1), syslog(3), at.deny(5), at.allow(5).
BUGS
The functionality of atd should be merged into cron(8).
local Mar 1997 ATD(8)