Executes commands entered on standard input at a specified
time and optional
date. (See also
.) End input with EOF.
time can be formed either as a numeric hour (with optional minutes and modifiers) or as a keyword.
date can be formed either as a month and date, a day of the week, or a special keyword.
increment is a positive integer followed by a keyword. See the following lists for details.
at is disabled by default in Mac OS X. You must first enable atrun by uncommenting its line in /etc/crontab.
Execute commands listed in
Send mail to user after job is completed (if an MTA such as sendmail is configured to run).
Schedule the job in
queuename. Values for
queuename are the lowercase letters a through l. Queue a is the default queue for at jobs. Queue b is the queue for batch jobs. Queues with higher letters run with increased niceness (receive less priority).
Hours can have one or two digits (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
hhmm; e.g., valid times are 5, 5:30, 0530, and 19:45. If modifier am or pm is added,
time is based on a 12-hour clock.
Use any one of these keywords in place of a numeric time. now must be followed by an
increment. teatime is 4:00 P.M.