First step Check that git is installed. git --version If it is not, then: sudo apt-get install git (for Debian/Ubuntu based systems) sudo yum install git (for RedHat/CentOS/Fedora based systems) Second step Download the script: https://github.com/lukasmonk/lucaschessR2/releases/download/R2.12c/LinuxInstaller.sh And launch it from a terminal. The whole installation is created in the ~/lucaschess folder, and there the program launcher and an update script are created: cd ~/lucaschess ./LucasR.sh ./update_lucaschess