---- Ubuntu-based Distributions ---- 
$ sudo add-apt-repository -y ppa:teejee2008/timeshift
$ sudo apt-get update
$ sudo apt-get install timeshift


$ sudo apt install timeshift    [On Debian]
$ sudo pacman -S timeshift      [On Arch Linux]
$ sudo dnf install timeshift    [On Fedora]
$ sudo zypper install timeshift [On OpenSUSE]
###
i.g. to make a snapshot just type as below:
timeshift --create 
and just keap going with guidlines
###