Ubuntu安裝virtualbox

安裝ubuntu 12.04 (Precise Pangolin)

1. 增加下面文字至/etc/apt/sources.lst
deb http://download.virtualbox.org/virtualbox/debian precise contrib

2. 增加key
wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -

3. 安裝
sudo apt-get update
sudo apt-get install virtualbox-4.3