Name
at
Synopsis
at [options]time[date]
Execute commands at a specified time and optional date. The commands are read from standard input or from a file. (See also batch.) End input with EOF. time can be formed either as a numeric hour (with optional minutes and modifiers) or as a keyword. It can contain an optional date, formed as a month and date, a day of the week, or a special keyword (today or tomorrow). An increment can also be specified.
The at command can always be issued by a privileged user. Other users must be listed in the file /etc/at.allow if it exists; otherwise, they must not be listed in /etc/at.deny. If neither file exists, only a privileged user can issue the command.
Options
- -c job [job...]
Display the specified jobs on the standard output. This option does not take a time specification.
- -d job [job...]
Delete the specified jobs. Same as atrm.
- -f file
Read job from file, not from standard input.
- -l
Report all jobs that are scheduled for the invoking user. Same as atq.
- -m
Mail user when job has completed, regardless of whether output was created.
- -q letter
Place job in queue denoted by letter, where letter is any single letter from a-z or A-Z. Default queue is a. (The batch queue defaults to b.) Higher-lettered queues run at a lower priority.
- -V
Display the version number.
Time
- hh:[mm] [modifiers]
Hours can have one digit or two (a 24-hour clock is assumed by default); optional minutes can be given as one or two digits; the colon can be omitted if the format is h, hh, or hhmm (e.g., ...
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