解決：E: Could not get lock /var/lib/dpkg/lock

問題：

ubuntu16 執行 sudo apt install aria2 命令時，提示以下錯誤

E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

解決：

sudo rm /var/lib/dpkg/lock
# 若是有出現 /var/lib/list/lock 刪除對應的鎖定文件便可