Step 1.) Installing “Back In Time”.
sudo gedit /etc/apt/sources.list
Add the following line to this file:
deb http://le-web.org/repository stable main
sudo apt-key add le-web.key
sudo apt-get update
sudo apt-get install backintime-common backintime-gnome
Step 2.) Using “Back In Time”.
Go to Applications -> System Tools -> Back in Time.
Go through the different tabs and setup your settings for your backups.
Once you have everything setup then you need to hit the “Backup Now” button. That’s it. you now have your Ubuntu backups.