Name
at
Synopsis
at [options
] [time
] [date
] [+increment
]
Executes commands entered on standard input at a specified
time and optional date.
(See also batch
and crontab
.)
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
will not run until you first enable
atrun
by uncommenting its line in
/etc/crontab
.
Options
-
-f
file
Execute commands listed in file.
-
-m
Send mail to user after job is completed (if an MTA such as sendmail is configured to run).
-
-q
queuename
Schedule the job in queuename. Values for queuename are the lowercase letters
a
throughl
. Queuea
is the default queue forat
jobs. Queueb
is the queue forbatch
jobs. Queues with higher letters run with increased niceness (receive less priority).
Time
-
hh
:
mm
[
modifiers
]
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 h, hh, or hhmm; e.g., valid times are 5, 5:30, 0530, and 19:45. If modifier
am
orpm
is added, time is based on a 12-hour clock.-
midnight | noon | now | teatime
Use any one of these keywords in place of a numeric time.
now
must be followed by an increment.teatime
is 4:00 PM.
Date
-
month num
[
year
] |
MM
/
DD
/
YY
|
DD
.
MM
.
YY
month is one ...
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