Cinnamon is the default desktop environment in Linux Mint, it brings the classic Gnome 2 feel to Gnome Shell. The ppa now supports Ubuntu 13.10 Saucy Salamander.
To install Cinnamon session on your Ubuntu, press Ctrl+Alt+T to open terminal, then follow the below steps:
1.) Add the stable ppa repository by running following commands: sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable
UPDATE: The PPA has been abandoned, Ubuntu 13.10 user can only install an old version of Cinnamon from Ubuntu repositories by running below commands
2.) Then update the package lists:
sudo apt-get update
3.) Finally install the session:
sudo apt-get install cinnamon
Once installed, log out your current session and select log into Cinnamon on LightDM.
Thid advice doesn’t work in saucy salamander.
cinnamon 2.0 breaks Unity in Ubuntu 13.10