I may already know the answer to this one, it's pretty basic.
This is about doing updates in the terminal, and you get to a point where it wants to replace a .conf file for example and it asks you if you want to replace, keep the old one, or show differences. Let's say you select 'D' for differences. How do you switch back to the original running process? I know you use Ctrl-z to get out of man pages, but that doesn't work here. I can't remember for the life of me how you get back to the upgrade after seeing what changes are being made.
Any help is appreciated.