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32 changes: 27 additions & 5 deletions Documentation/Concepts/Backend/SystemModules/Index.rst
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
System modules
==============

System modules are backend modules in the group "System"
System modules are backend modules in the group "System"
and they are only available to backend users with
admin permissions.

Expand All @@ -21,10 +21,10 @@ full TYPO3 install, see `https://get.typo3.org/misc/composer/helper`__.
Permissions
===========

In TYPO3, you can grant permissions to backend users.
At first, a newly created backend user without any administrative
privileges has no access to neither the page module nor the
pages in the backend.
In TYPO3, you can grant permissions to backend users.
At first, a newly created backend user without any administrative
privileges has no access to neither the page module nor the
pages in the backend.
The module :guilabel:`System > Permissions` can be used to view or edit
these backend user permissions for pages in the backend.

Expand Down Expand Up @@ -79,6 +79,28 @@ The Scheduler supports one-time or periodic execution of tasks that can be
delivered by any extension. It has its own manual:
:ref:`TYPO3 Scheduler <typo3/cms-scheduler:start>`.

.. _system-modules-scheduler-cronjobs:

Cron jobs in Scheduler
----------------------

The backend module called :ref:`TYPO3 Scheduler <typo3/cms-scheduler:start>` can
be used to perform a task that you defined previously in the scheduler.
The scheduler can be triggered by a cron job. In your terminal you
can type

.. code-block:: shell
:caption: Create or open the crontab

crontab -e

to create a new job on unix-like operating systems. In
:ref:`Setting up the cron job <typo3/cms-scheduler:cron-job>` you can see how
this works. Normally you have to define the time or a time interval in which the
job should be performed once or frequently. To test your pattern you can insert
it `here <https://crontab.guru/>`__ and test if it performs like you expect.
When you are not familiar with cron jobs we refer to https://en.wikipedia.org/wiki/Cron.

.. _system-modules-dbcheck:

DB check (optional)
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