Switch to root mode (administrator), to install the necessary packages:
sudo -s
If the 'sudo' command tells you're not in the sudoers list, then run:
su -
2 clicks for increased privacy: only when you click here the button will be activated and you can send your recommendation to Facebook. The activation will transmit data to third parties – see i.not connected to Facebook
2 clicks for increased privacy: only when you click here the button will be activated and you can send your recommendation to Twitter. The activation will transmit data to third parties – see i.nicht mit Twitter verbunden
2 clicks for increased privacy: only when you click here the button will be activated and you can send your recommendation to Google+. The activation will transmit data to third parties – see i.nicht mit Google+ verbunden