Nice introduction. Though I disagree his opinion that it is not worth learning awk in 2013.
For quick operations on DSV files it fits perfectly for the command line and learning its compact syntax is not hard for (most) Unix users.
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I particularly disagree with anyone's opinion that Awk is not worth learning, if they proceed to whip out "cut" as an example of something worth learning.
Awk generates solutions to certain problems involving record and field delimited text whose succinctness cannot be approached by common scripting languages.
Scripting languages, not even Perl?
Cut provides massive bang for buck , just learning "-f -d" and "-c"