Packages, services, and logs

Packages and software installation

Question 9 of 10

Read the output

You typed `apt install cowsay` and got this output. What do you do?

E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

Delete the file /var/lib/dpkg/lock-frontend.
Repeat the command with sudo.
Run apt update and try again.
Reboot the machine to release the lock.

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