Install VBox -4.2 Ubnt12.04

To get started, press Ctrl – Alt – T on your keyboard to open the terminal. When it opens, run the commands below to add its repository’s key.

wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -

Next, copy and paste the commands below to add its repository.

sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian precise contrib" >> /etc/apt/sources.list'

Finally, run the commands below to update your system and install VirtualBox 4.2

sudo apt-get update && sudo apt-get install virtualbox-4.2

Enjoy!