Gdebi of deb files

 Use:

gdebi-gtk

When you do “apt-get install” where are the .deb files stored?

They're stored in:

/var/cache/apt/archives/

unless you've issued a:

apt-get clean

(https://superuser.com/questions/378686/when-you-do-apt-get-install-where-are-the-deb-files-stored)

Deletion of make install files

Deletion of make install files

https://stackoverflow.com/questions/1439950/whats-the-opposite-of-make-install-i-e-how-do-you-uninstall-a-li

sudo make uninstall

In a Debian based system, instead of (or after*) doing make install you can run sudo checkinstall to make a .deb file that gets automatically installed. You can then remove it using the system package manager (e.g. apt/synaptic/aptitude/dpkg). Checkinstall also supports creating other types of package, e.g. RPM.