解決 E: Could not get lock /var/lib/apt/lists/lock

參考：Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

在更換軟件源時遇到了如下問題：

sudo apt-get update

E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/

表明當前有某個進程正在apt-get，然而我並沒有使用任何命令，於是需要kill掉進程。

解決方法是：

sudo rm /var/lib/apt/lists/lock

2017.3.12