Here’s how to install Cinnamon desktop in Ubuntu 12.04 LTS ‘Precise Pangolin’: 1. Issue the following command at the terminal – sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable 2. After the repository has been added, issue the following command at the terminal – sudo apt-get update 3. After the package lists have been updated, issue the following command...