Ubuntu sudo apt-get install err

Problem

E: 無法獲得鎖 /var/lib/dpkg/lock-frontend - open (11: 資源暫時不可用)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

Resolve

sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock