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  1. What is Linux? - Linux.com

  2. Download Linux | Linux.org

  3. Linux - Wikipedia

  4. What is Linux? - Red Hat

  5. Understanding Linux - Red Hat

  6. The Complete Beginner's Guide to Linux - Linux.com

  7. An Introduction to Linux Basics | DigitalOcean

  8. What is Linux? | Opensource.com

  9. What is Linux? {Understanding Linux Operating System}

  10. Introduction to Linux | Codecademy