So, you like the dock that Mac OS X has and you want one for your ubuntu installation. You’ve come to the right place…..This one is simple. All you need to do is open up a command line terminal in ubuntu. To open up a command line terminal, just go to Applications -> Accessories -> Terminal. At the command prompt type the following command:
sudo apt-get install avant-window-navigator
After you install the dock in order to get it running all you need to do is just go to Applications -> Accessories -> Avant Window Navigator. That’s it..Now you have a Mac OS X like dock in Ubuntu. I hope you enjoy.