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Across
  1. 4. – Kernel type used in Linux (____ kernel)
  2. 6. – Unix editor older than vim
  3. 9. – Creator of the Linux kernel
  4. 12. – GPL stands for GNU General ___ License
  5. 15. – Lightweight Linux text editor (4 letters)
  6. 16. – Open-source OS used in Android smartphones
  7. 18. – Linux mascot, a penguin
  8. 19. – Package manager for Red Hat/Fedora systems
  9. 20. – Tool for version control created by Linus Torvalds
  10. 22. – Famous open-source browser by Mozilla
Down
  1. 1. – License under which Linux is distributed (abbr.)
  2. 2. – Command to display file contents
  3. 3. – Command to remove directory
  4. 4. – Open-source database, often paired with PHP
  5. 5. – Command to change directory
  6. 7. – Father of the Free Software Movement
  7. 8. – Linux command to list files and directories
  8. 10. – Package manager for Debian/Ubuntu systems
  9. 11. – Distribution known for stability, starts with D
  10. 12. – Linux command to print working directory
  11. 13. – Command to change permissions
  12. 14. – GNU stands for “GNU’s Not ___”
  13. 16. – Popular open-source office suite
  14. 17. – Popular Linux distribution developed by Canonical
  15. 21. – Command to terminate a process