I just updated my ubuntu to 20.04.4 and noticed that emacs is no longer there. Other programs that I had downloaded prior to updating, like racket and ocaml, still work. Emacs however, is not working - the emacs command is not recognized. I see that I still have a /etc/emacs folder ($ whereis emacs told me that), so I am not sure why the command $ emacs is not recognized anymore.
I would be interested in knowing both how to fix this but also what caused it. I am using WSL2, if that is relevant.