Sure you can use unzip, unrar, and other tools to extract files under Linux. e is little tool that can extract almost any archive in Linux so you do not need to remember which tool and what command lines are necessary.
You need ruby lanaguage installed on your computer to use this tiny tool. Apart from Ruby, e uses the linux tool file to determine what kind of archive it is dealing with. This tool should be available on any proper Linux installation. Once e knows the archive type, the appropriate extraction tool is executed.
You can read more about this tool, installation and other notes at Martin Ankerl blog.