sudo add-apt-repository ppa:tualatrix/ppa
sudo apt-get update
sudo apt-get install ubuntu-tweak
 
 
sudo add-apt-repository ppa:ubuntu-desktop/ubuntu-make
 
deb http://dl.hhvm.com/ubuntu trusty main
deb http://download.mono-project.com/repo/debian wheezy main
 
sudo add-apt-repository ppa:webupd8team/atom
sudo apt-get update
sudo apt-get install atom
 
deb http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu trusty main
# deb-src http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu trusty main