Click the "Dash" icon. Type "terminal" (without quotes) in the search box. Click the "Terminal" application icon. Navigate to the folder containing the RAR archive you want to extract files from using ...

If you need to send a set of files to another user via email or attach a link to a cloud drive, you might have to compress the folder containing files to send it. This is to save internet data, time, ...

If you ask anyone which software they use to archive or extract files on Windows, chances are that they either use WinRAR or 7-Zip. After all, these are the two most popular tools for this purpose.