80 lines
1.1 KiB
Markdown
80 lines
1.1 KiB
Markdown
---
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title: "at"
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tags: [ "Documentation", "Basics" ]
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---
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Install with:
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```bash
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sudo apt install at
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```
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Enable the daemon service with:
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```bash
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sudo systemctl enable --now atd
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```
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Then jobs can be specified with absolute time, such as:
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```bash
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at 16:20
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```
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```bash
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at noon
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```
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```bash
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at midnight
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```
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```bash
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at teatime
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```
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Type in your command, e.g.:
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```bash
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touch /tmp/$FILE.txt
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```
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The jobs can also be specified relative to the current time:
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```bash
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at now +15 minutes
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```
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Finally, accept the jobs with ^D.
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# Managing `at` Jobs
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Display a list of commands to run with:
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```bash
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atq
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```
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> 2 Sat Oct 20 16:00:00 2018 a roach-1
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This will print all pending IDs. Remove a job by the ID with:
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```bash
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atrm 2
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```
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Check `/var/spool/atd/` to see the jobs.
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## Automation
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Automatically add a job for later, by setting the date, then using echo for the command.
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```bash
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t="$(date -d "2 minutes" +%R)"
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echo "fortune > ~/$FILE" | at "$t"
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watch cat $FILE
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```
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The `$t` here outputs the day in minutes, but you could also do `t="$(date -d "2 days" +%m/%d/%Y)"`.
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