After I login ubuntu, as usual, I check upgradable packages by running: sudo apt update
. Then the result is:
36 packages can be upgraded. Run 'apt list --upgradable' to see them.
I continue with the command:sudo apt upgrade
but I got error:
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?
I waited for a few moments and then I rerun the previous command and it told me:
2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Is it an apt error or there's an update process running on the background?