2012-05-10 ubuntuを自動更新 sudo apt-get update sudo apt-get instal unattended-upgradeshttp://tobysoft.net/wiki/index.php?Ubuntu%2F%BC%AB%C6%B0%A5%A2%A5%C3%A5%D7%A5%C7%A1%BC%A5%C8%A4%B5%A4%BB%A4%EB