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 (internatiolization) functions,
* String functions, and finally,
* Time functions.
This sed cheat sheet contains:
* command line summary
* command description, if they take single address or pattern, or a range of addresses, and what they modify (input stream, output stream, pattern space or hold buffer)
* command line argument summary
* extensions
* short summary of adderss range format