21-2 Duplicati

sudo apt install mono-runtime
systemctl enable duplicati.service
sudo systemctl enable duplicati
systemctl status duplicati

https://github.com/duplicati/duplicati/wiki/Headless-installation-on-Debian-or-Ubuntu
https://github.com/duplicati/duplicati/issues/2215
https://forum.duplicati.com/t/installing-duplicati-on-ubunutu-linux/743
https://github.com/duplicati/duplicati/wiki/How-does-it-work---the--basics

To start:

systemctl start duplicati.service

To stop:

systemctl stop duplicati.service

To enable at boot time:

systemctl enable duplicati.service