I would like to ask a very basic question but I have never thought about it before.
Well, when someone installs an application from terminal, he has to add the repository first, right? On the other side, when someone installs an application from the Ubuntu Software Center, is the repository then added automatically?
I am asking those questions to figure out this: When I run update and then upgrade, will this application be upgraded or not? Is the result same in two options?