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• Wikipedia Aho, Weinberger and Kernighan programming language

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• AWK (Aho, Weinberger and Kernighan) Summary (awk cheat sheet) by Peteris Krumins [.pdf]
• AWK (Aho, Weinberger and Kernighan) Summary (awk cheat sheet) by Peteris Krumins [backup]
• awk Quick Ref compiled by Vincent Ledos [pdf]