For what it is worth....
There is an Open Source Linux Clone maker.
https://en.wikipedia.org/wiki/Back_in_Time_(Linux_software)Back In Time is a backup application for Linux. It has versions that integrate favorably in GNOME and KDE SC 4 and is available directly from the repositories of many Linux distributions. Released under the terms of the GNU General Public License (GPL), it is free software.
Back In Time is available in Ubuntu’s Software Center.
