An bash alias is nothing but the shortcut to commands. The alias command allows the user to launch any command or group of commands (including options and filenames) by entering a single word. Use alias command to display a list of all defined aliases. You can add user-defined aliases to ~/.bashrc file. You can cut down typing time with these aliases, work smartly, and increase productivity at the command prompt.
There are three ways to open any file under Gnome Linux / UNIX Desktop. gnome-open is the quickest and easiest way to open any file or url.