This cheat sheet contains: Predefined Variable Summary, which lists all the predefined variables and which awk versions (original awk, nawk or gawk) have it built in, GNU awk’s command line argument summary, I/O statements, Numeric functions, Bit manipulation functions, I18N (internationalization) functions, String functions, and finally, Time functions.
The cheat sheet was created as a part of an article "Awk, Nawk and Gawk Cheat Sheet".
Created by Peteris Krumins (about him) from catonmat - good coders code, great reuse
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