NAME
atrun —
run jobs queued for later
execution
SYNOPSIS
atrun |
[-l load_avg]
[-d] |
DESCRIPTION
Atrun runs jobs queued by
at(1).
The system crontab(5) file /etc/crontab must contain the line
*/5 * * * * root /usr/libexec/atrun
so atrun is invoked every five
minutes.
At every invocation, atrun starts all the
jobs in the lowercase queues whose start time has elapsed. In addition, if
the load average over the last minute was less than the specified limit,
then a maximum of one batch job (denoted by the uppercase queues) is
started.
Before starting a job, atrun checks the
status of its owner's account with
pam(3) and refuses to run the job if the account is unavailable,
e.g., locked out or expired.
OPTIONS
-lload_avg- Specify a limiting load factor, over which batch jobs should not be run, instead of the default of 1.5 * number of active CPUs.
-d- Debug; print error messages to standard error instead of using syslog(3).
WARNINGS
For atrun to work, a
cron(8) daemon must be running atrun
periodically.
FILES
- /etc/pam.d/atrun
- pam.conf(5) configuration file for
atrun - /var/at/jobs
- Directory containing job files
- /var/at/spool
- Directory containing output spool files
SEE ALSO
at(1), crontab(1), pam(3), syslog(3), crontab(5), pam.conf(5), cron(8)
BUGS
The functionality of atrun should be
merged into cron(8).