Installing Steam on Elementary OS While Elementary OS is based on Debian/Ubuntu, newer versions of Elementary don't automatically have the application required to open .deb files.

Opening a .deb file on Chrome OS Canary (source) On most Debian-based Linux distributions, users can double-click on .deb packages to install them.

If you're tired of having to jump through hoops to open files with sudo privileges in the GNOME File Manager, Jack Wallen has just the trick you need.