I’ve scoured over the net on how to permanently remove the Exim4 Mail Server from the Ubuntu OS and came across with this one command that did it. The other options that include purge with it didn’t work. So I’m sticking with this one since it is what made it work and I was able to reinstall Exim4 again.
I searched through every Google search results and wondered why after updating my apt-get source list, installing Java in Ubuntu still did not work out. It turned out that my source list were lacking some sources in it. If doing this command