Puzzle 1

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Across
  1. 2. - Compress files into an archive
  2. 4. - Display the last lines of a file
  3. 5. - View file contents page by page
  4. 7. - Search text for specific patterns
  5. 9. - Display running processes
  6. 10. - Extract sections from text
  7. 11. - Arrange lines of text
  8. 14. - Change permissions of a file
  9. 15. - Search text for specific patterns
  10. 17. - Show help for a command
  11. 18. - Run a command repeatedly
  12. 20. - Archive files with a dot prefix (fictional for fill)
  13. 21. - Show the top lines of a file
Down
  1. 1. - Terminate a process
  2. 3. - Display or set the system date
  3. 6. - Pause execution for a time
  4. 8. - Print text to the terminal
  5. 9. - Create or update a file
  6. 11. - Run a command as superuser
  7. 12. - Archive files into one package
  8. 13. - Search for files in a directory
  9. 14. - Display file contents on screen
  10. 16. - Print the current working directory
  11. 19. - Archive files into one package