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I love sed too, but you should mention QED (1965!) here, which is actual proto-mother of almost all text-related goodies. Let me quote a nice wikipedia paragraph, which covers it.


ed went on to influence ex, which in turn spawned vi. The non-interactive Unix command grep was inspired by a common special uses of qed and later ed, where the command g/re/p means globally search for the regular expression re and print the lines containing it. The Unix stream editor, sed implemented many of the scripting features of qed that were not supported by ed on Unix; sed, in turn, influenced the design of the programming language AWK, which in turn inspired aspects of Perl.

And I love AWK too.

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