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Continue to ChatO'Reilly Media book: Effective awk Programming, 3rd Edition https://wp.jochen.hayek.name/blog-en/2012/10/02/oreilly-media-book-effective-awk-programming-3rd-edition/
O'Reilly Media book: Effective awk Programming, 3rd Edition https://wp.jochen.hayek.name/blog-en/2012/10/02/oreilly-media-book-effective-awk-programming-3rd-edition/