hey how's it going derek here from Addictive Tips. so for whatever reason you may run into a file archive like this running Linux. YouTube·AddictiveTipsTV

The extension refers to a Roshal Archive , a compressed format often used to group multiple files into a single, smaller package. Below is a review of the format and tools you would use to access such a file. RAR File Format Overview

To open , you will need a third-party utility depending on your operating system: How to extract RAR files on Linux