I have several reasons to think that my terminal behaves like a console.
I use GNOME Terminal 3.18.3.
When I open vim from my terminal on fedora 23, the following warning is emitted: "Vim: Warning: Output is not to a terminal".
When I open the manual for a command, it does not switch the terminal in "reading" mode. What I mean by that is that it does not put me on the manual page where I could scroll using HJKL and quit using q. Instead, it just prints the content of the manual as the result of a command like ls in one fell swoop.
Commands like ls are not colored.
I think this happened after I tried using my computer using Ctrl+Alt+F3 (from the console).
How can I set my terminal back to its previous state?