Unable to obtain lock/var/lib/dpkg/lock, vardpkg

Unable to obtain lock/var/lib/dpkg/lock, vardpkg
Problem

When you use apt-get install, the following message is displayed:

E: unable to obtain the lock/var/lib/dpkg/lock-open (11: The resource is temporarily unavailable)
E: The management directory (/var/lib/dpkg/) cannot be locked. Is there any other process occupying it?

Solution

Solution 1: List the processes, find the processes that contain apt-get, and solve the problem directly by using sudo kill PID (test, invalid)

1 ps-aux | grep apt-get2 sudo kill PID

Solution 2: Force unlock (test, valid)

1 sudo rm/var/cache/apt/archives/lock2 sudo rm/var/lib/dpkg/lock