2022-01-16 18:20:39 +00:00
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---
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title: "at"
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2022-01-26 21:29:48 +00:00
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tags: [ "Documentation", "Basics" ]
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2022-01-16 18:20:39 +00:00
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---
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2021-05-15 14:41:45 +00:00
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Install with:
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> sudo apt install at
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Enable the daemon service with:
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> sudo systemctl enable --now atd
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2020-01-02 00:04:35 +00:00
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Then jobs can be specified with absolute time, such as:
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> at 16:20
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> at noon
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> at midnight
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> at teatime
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2021-05-15 14:41:45 +00:00
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Type in your command, e.g.:
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> touch /tmp/myFile.txt
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2020-01-02 00:04:35 +00:00
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The jobs can also be specified relative to the current time:
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> at now +15 minutes
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Finally, accept the jobs with ^D.
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# Managing `at` Jobs
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Display a list of commands to run with:
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> atq
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`2 Sat Oct 20 16:00:00 2018 a roach-1`
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This will print all pending IDs. Remove a job by the ID with:
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> atrm 2
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2020-01-10 04:19:29 +00:00
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Check /var/spool/atd/
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2023-04-13 04:06:54 +00:00
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## Automation
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Automatically add a job for later, by setting the date, then using echo for the command.
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> t="$(date -d "2 minutes" +%R)"
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> echo "fortune > ~/file" | at "$t"
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> watch cat file
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The `$t` here outputs the day in minutes, but you could also do `t="$(date -d "2 days" +%m/%d/%Y)"`.
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