Could not open lock file ubuntu
- Could not open lock file permission denied ubuntu
- Could not open lock file /var/lib/dpkg/lock-frontend ubuntu
- Could not open lock file /var/lib/apt/lists/lock ubuntu
- Ubuntu could not open lock file lock-frontend
- Ubuntu apt-get could not open lock file
- Could not open lock file /var/lib/dpkg/lock
- E could not open lock file /var/lib/apt/lists/lock - open (13 permission denied)