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 open a file with the rar extension on your Mac, there's a handy app called The Unarchiver that can help you do just that. Rar files are commonly used to extract a huge amount of data — ...