Timeshift for Linux is an application that provides functionality similar to the System Restore feature in Windows and the Time Machine tool in Mac OS. Timeshift protects your system by taking incremental snapshots of the file system at regular intervals. These snapshots can be restored at a later date to undo all changes to the system.

From <https://teejeetech.com/timeshift/>

Open-source software for Linux
 Aptik Migration Utility
Selene Media Converter
Timeshift
Ukuu Kernel Upgrade Utility
Battery Monitor
Compared
Conky Manager
Timeshift BTRFS
FFCoder
7-Zip SFX Maker 

http://luckybackup.sourceforge.net/

http://www.linux-backup.net/App/

http://www.linuxquestions.org/questions/linux-networking-3/rsync-to-an-off-the-shelf-nas-475338/

mount syntax

Rsync exclude