I have 18.04 Ubuntu with Mate.
I looked at Top 15 Open Source Backup Software for Linux page on Internet and found, that Kbackup fits my needs: it's a tool with tree inspector with checkbox (gnome has ascetic Deja Dup).
https://www.ubuntupit.com/wp-content/uploads/2018/03/Kbackup.jpg
But how can I install it?
Recommended method sudo apt-get install kbackup doesn't work: there is no such package.
Also I noticed that its package in pre-release freeze status, what does it mean?
Or may be you suggest an alternative?