a

at(1)

at(1)

LC_MESSAGES also determines the language in which the words days, hours, midnight, minutes, months, next, noon, now, today, tomorrow, weeks, years, and their singular forms can also be speci®ed.

IF LC_TIME or LC_MESSAGES is not speci®ed in the environment or is set to the empty string, the value of LANG is used as a default for each unspeci®ed or empty variable. If LANG is not speci®ed or is set to the empty string, a default of "C" (see lang(5)) is used instead of LANG.

If any internationalization variable contains an invalid setting, all internationalization variables default to "C" (see environ(5)).

International Code Set Support

Single- and multi-byte character code sets are supported.

RETURN VALUE

The exit code is set to one of the following:

0Successful completion

1Failure

DIAGNOSTICS

at produces self-explanatory messages for syntax errors and out-of-range times.

warning: commands will be executed using /usr/bin/sh

If your login shell is not the POSIX shell (/usr/bin/sh ), at and batch produce a warning message as a reminder that at and batch jobs are executed using /usr/bin/sh .

EXAMPLES

The following commands show three different ways to run a POSIX shell script ®le named delayed-job®ve minutes from now:

at

-f delayed-job

now + 5 minutes

cat delayed-job

at now + 5 minutes

at

now + 5 minutes

<delayed-job

Run a typical HP-UX command (nroff in this case) when system load levels permit, and redirect standard output and standard error to ®les:

batch

nroff source-file >output-file 2>error-file

eof (the default is Ctrl-D)

Run a job contained in future in the home directory at 12:20 a.m. on December 27, 2013:

at -f $HOME/future -t201312271220.00

Redirect standard error to a pipe (useful in a shell procedure). Note that the sequence of the output redirection speci®cations is signi®cant. Standard error is redirected to where standard output is going; standard output is redirected to a ®le; the original "standard output" (which now consists of the former standard error) is piped to the mail program.

batch <<!! (sets eof temporarily to !!)

nroff input-file 2>&1 1> output-file mail loginid

!!

Run a job contained in jobfile in the home directory at 5:00 a.m. next Tuesday:

at -f $HOME/jobfile 5am tuesday next week

Run the same job at 5:00 a.m. one week from next Tuesday (i.e., 2 Tuesdays in advance):

at -f $HOME/jobfile 5am tuesday + 2 weeks

Add a command to the ®le named weekly-runin directory jobs in the home directory so that it automatically reschedules itself every time it runs. This example reschedules itself every Thursday at 1900 (7:00 p.m.):

echo "sh $HOME/jobs/weekly-run" at 1900 thursday next week

The following commands show several forms recognized by at and include native language usage:

Section 1−30

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HP-UX Release 11i: December 2000