Trying to upgrade to 16.04 from 15.10, but “the required dependency ‘apt (>= 18.104.22.168ubuntu2)’ is not installed”?
I tried sudo apt-get update, but got
E: Could not get lock /var/lib/apt/lists/lock – open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
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?
Any advice? Let me know if you need any more info.