This tutorial will show you How to install Ubuntu Tweak 0.8 on Ubuntu 12.04. Ubuntu Tweak is a powerful tool that give you access to several system settings on Ubuntu 12.04. You can clean up your system, install new software, change the advanced appearances and many more. Installing Ubuntu Tweak 0.8 on Ubuntu 12.04 is not hard.
Steps to install Ubuntu Tweak 0.8 on Ubuntu 12.04
Step 1. Add the Ubuntu Tweak repository. Open Terminal and paste this command to add Ubuntu Tweak repository to Ubuntu 12.04
sudo add-apt-repository ppa:tualatrix/ppa
Step 2. Update system and install Ubuntu Tweak
sudo apt-get update && sudo apt-get install ubuntu-tweak
Now, Ubuntu Tweak should be installed and can be used right away.
Reference:
http://www.liberiangeek.net/2012/10/install-ubuntu-tweak-0-8-0-in-ubuntu-12-0-precise-pangolin/