gdebi

Have you ever downloaded a .deb file and wondered what the best way to install it is?
This little gem of an app, does the trick for me. It installs the file while resolving and installing all its dependencies!

gdebi is a simple tool to install deb files. It lets you install local deb packages resolving and installing its dependencies.

apt does the same, but only for remote (http, ftp)
located packages.

It has a graphical user interface but can be used in your terminal.

https://launchpad.net/gdebi