I was trying to install matlab couple of days ago but the process stuck due to the
malfunction of the ISO file. Now I cannot stop this installation because it prevents me to get update or upgrade.
This is the error I get when I try to install smth from the terminal:
ubuntu@ubuntu-Inspiron-N5010:~$ sudo apt-get upgrade
[sudo] password for ubuntu:
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Thank you in advance