I have an old version emacs on my Ubuntu 12.04. I built the latest emacs from its source, and used checkinstall to create a deb package, and installed emacs from the deb file. Will it be good to keep the deb file? My space is very limited nonetheless.How about the source files? If yes,  what source files to keep?Thanks.
Shall I keep the deb file created by checkinstall after I install from the deb file?
ubuntu;software installation