I’m used to doing backups by using Nextcloud URL in a bash script.
remote.php/dav/addressbooks/users/nextcloud/Test/?export to export my contacts.
Would it be possible to do the same for Tasks? E.g. save all tasks in a folder by calling a specific endpoint?
You can use the calendar endpoint for exporting tasks, because tasks are also stored as calendars in the database.
The link would be:
[URI] can be looked up in table ‘oc_calendars’ in your Nextcloud database (prefix might be different from ‘oc_’ in your installation).
I also wrote a bash script that exports calendars and addressbooks from Nextcloud and saves them as .ics file. Maybe that can do the work for you. See here: