In this tutorial, we learn how to use Linux: Commandline Dependencies with gdebi. First, download a Deb file then use dpackage to install the package on the command line. If this fails, you will be able to use gdebi to install all the dependencies in command mode. This will save you time from trying to figure out how to open your file any other way. When you are finished, you will be able to open you file and enjoy what's inside. If you aren't familiar with how this works, search the internet and download gdebi to help you open up these types of files.