• Sources:
  • awk One-Liners By Eric Pement
  • sed & awk, 2nd Edition, by Dale Dougherty and Arnold Robbins O'Reilly, 1997
  • UNIX Text Processing, by Dale Dougherty and Tim O'Reilly Hayden Books, 1987
  • Effective awk Programming, 3rd Edition. by Arnold Robbins O'Reilly, 2001

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