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This section presents a number of POSIX utilities that are implemented in
awk. Reinventing these programs in
awk is often enjoyable,
because the algorithms can be very clearly expressed, and the code is usually
very concise and simple. This is true because
awk does so much for you.
It should be noted that these programs are not necessarily intended to
replace the installed versions on your system. Instead, their
purpose is to illustrate
awk language programming for "real world"
The programs are presented in alphabetical order.
14.2.1 Cutting out Fields and Columns The
14.2.2 Searching for Regular Expressions in Files The
14.2.3 Printing out User Information The
14.2.4 Splitting a Large File into Pieces The
14.2.5 Duplicating Output into Multiple Files The
14.2.6 Printing Nonduplicated Lines of Text The
14.2.7 Counting Things The
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