at.allow, at.deny - determine who can submit jobs via at or batch
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.
at(1),
cron(8),
crontab(1),
atd(8).