You can find my bash scripts here. Feel free to explore, use ore modificate them.
I bought a second-hand WD My Cloud Mirror - Gen2 NAS . The NAS has a webinterface with rudimentary functions and it has the ability to access via ssh.
The second point is what I wanted to get my data from my LINUX desktop backuped to a network share.
The ssh access is better than the web interface for automating the daily backups. However, I had to find out that the login via ssh-key is unfortunately not possible with the NAS mentioned above! You can create a key, but it is not persistent. After each boot process of the NAS, this is unfortunately deleted from the NAS system.
A login with a password - which you can set up yourself via the web interface of the NAS - is possible at any time. The energy-saving mode of the NAS can also be controlled via ssh.
In addition, the NAS can be woken up via WOL (wake on lan).
The script needs to be executed with sudo rights. It has furthermore mandatory to be marked as executable.
It can be manually started with sudo ./backup_daily.sh or, much better, as a cronjob.
The code has been tested under Manjaro Linux and it worked reliable. The script generates a logfile. The size of the logfile may increase infinitely at the moment. A clean up routine for the logfile is not implemented, yet.