Puzzle 5

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Across
  1. 5. - Compress or decompress files
  2. 7. - Add a new user to the system
  3. 8. - Trace library calls
  4. 9. - Convert and copy files
  5. 10. - Create a filesystem
  6. 13. - Administer the /etc/group file
  7. 16. - Reverse lines or characters
  8. 17. - Run a command with a different root directory
  9. 18. - Prepare files for printing
  10. 21. - Decompress gzip files
  11. 22. - Number lines in a file
Down
  1. 1. - Manipulate the system ARP cache
  2. 2. - Change user password
  3. 3. - Check and repair a filesystem
  4. 4. - Filter reverse line feeds
  5. 6. - Configure network interfaces
  6. 9. - Print kernel ring buffer messages
  7. 10. - Compile and build programs
  8. 11. - Display the last login times of users
  9. 12. - Parse command-line options
  10. 14. - Desk calculator for arbitrary-precision arithmetic
  11. 15. - Convert text from DOS to Unix format
  12. 19. - Compress files
  13. 20. - Show or manipulate routing and network devices