Install the Debian menu to make all installed applications

Missing Icons & Fix Broken Icons

sudo apt-get update
sudo apt-get install menu menu-xdg
update-menus

Keeping Ubuntu clean

Install deborphan with command:
sudo apt-get install deborphan

To delete unnecessary libraries just execute:
sudo deborphan | xargs sudo apt-get -y remove --purge

To delete unnecessary data

packages use command:
sudo deborphan --guess-data | xargs sudo apt-get -y remove --purge

To see all

packages which aren’t required by any others use command
deborphan --guess-all

There is another tool to delete orphaned

packages, it’s  GtkOrpha:
sudo apt-get install gtkorphan

Once it’s installed go to System –> Administration –> Remove Orphaned

Packages, enter your password and proceed with cleaning up.

Another nice tip is to clean partial and orphaned

packages by commands:
sudo apt-get autoclean
sudo apt-get autoremove