[ubuntu]how to solve Unmet dependencies?

當你在 ubuntu 使用 apt-get install 時碰到 :
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

請執行下列方法:

sudo apt-get update && sudo apt-get install -f

若是上述方法無效, 可以再試試看下列方法.

sudo cp /etc/apt/sources.list ~/ 
sudo wget "http://pastebin.com/raw.php?i=uzhrtg5M" -O /etc/apt/sources.list 
sudo apt-get update
sudo rm /etc/apt/sources.list.d/ubuntu-extras.list
sudo apt-get update

apt-get update 失敗
sudo mv /var/lib/apt /var/lib/apt.old && sudo mv /var/cache/apt /var/cache/apt.old
sudo rm -rf /var/lib/apt/lists/*

更強的方式: Link