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Perl in file pattern substitution

Problem

You want to substitute a pattern in a number of files, making backups and modifying in place on the fly.

And you can do this in Perl - with a one liner!

Problem	Solution	Example	Reference	Recommended
You can even pass in a wildcard. perl -pi'.bak' -e's/pattern/replace/g' filename Here is a demo of replacing all occurrences of unix with UNIX, in all html files. perl -pi'.bak' -e 's/unix/UNIX/g' htm

Perl in file pattern substitution

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