E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied) E: Unab code example
Example 1: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
Try 'sudo apt-get update' or 'sudo apt-get upgrade'
Example 2: E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
ps aux | grep -i apt
sudo kill <process_id>
sudo kill -9 <process_id>
sudo killall apt apt-get