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at.allow(5) [centos man page]

AT.ALLOW(5)						     Linux Programmer's Manual						       AT.ALLOW(5)

NAME
at.allow, at.deny - determine who can submit jobs via at or batch DESCRIPTION
The /etc/at.allow and /etc/at.deny files determine which user can submit commands for later execution via at(1) or batch(1). The format of the files is a list of usernames, one on each line. Whitespace is not permitted. If the file /etc/at.allow exists, only usernames mentioned in it are allowed to use at. If /etc/at.allow does not exist, /etc/at.deny is checked, every username not mentioned in it is then allowed to use at. An empty /etc/at.deny means that every user may use at. If neither exists, only the superuser is allowed to use at. SEE ALSO
at(1), cron(8), crontab(1), atd(8). Sep 1997 AT.ALLOW(5)

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ATD(8)							      System Manager's Manual							    ATD(8)

NAME
atd - run jobs queued for later execution SYNOPSIS
atd [-l load_avg] [-b batch_interval] [-d] [-f] [-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 1.5. For an SMP system with n CPUs, you will probably want to set this higher than n-1. -b Specify 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). This option also implies -f. -f Run atd in the foreground. -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/cron/atjobs The directory for storing jobs; this should be mode 700, owner daemon. /var/spool/cron/atspool The directory 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). 2009-11-14 ATD(8)
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