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(task-scheduler)=
# Task Scheduler
The task scheduler allows you to execute tasks on a given schedule. It makes
use of UNIX [cron].
:::{note}
All scripts executed this way are executed as root user - this may
be dangerous. Together with {ref}`command-scripting` this can be used for
automating (re-)configuration.
:::
```{cfgcmd} set system task-scheduler task \<task\> interval \<interval\>
Specify the time interval when `<task>` should be executed. The interval
is specified as number with one of the following suffixes:
* ``none`` - Execution interval in minutes
* ``m`` - Execution interval in minutes
* ``h`` - Execution interval in hours
* ``d`` - Execution interval in days
:::{note}
If suffix is omitted, minutes are implied.
:::
```
```{cfgcmd} set system task-scheduler task \<task\> crontab-spec \<spec\>
Set execution time in common cron time format. A cron `<spec>` of
``30 */6 * * *`` would execute the `<task>` at minute 30 past every 6th hour.
```
```{cfgcmd} set system task-scheduler task \<task\> executable path \<path\>
Specify absolute `<path>` to script which will be run when `<task>` is
executed.
```
```{cfgcmd} set system task-scheduler task \<task\> executable arguments \<args\>
Arguments which will be passed to the executable.
```
[cron]: https://en.wikipedia.org/wiki/Cron
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