could not open lock file /var/lib/apt/lists/lock - open (13 permission denied) kali linux 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: why upgrade ubuntu then frequently shows this message "It iwating for cache lock: Could not get lock /var/lib/dpkg/lock.frontend.

It iwating for cache lock: Could not get lock /var/lib/dpkg/lock.frontend.