Easiest way to recursively find and replace?

Posted by FarmBoy on Stack Overflow See other posts from Stack Overflow or by FarmBoy
Published on 2010-03-31T14:13:46Z Indexed on 2010/03/31 14:23 UTC
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grep

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search-and-replace

I want to recursively search through a directory of text files and replace every occurrence of foo within the files with bar. What is the easiest way to accomplish this?

I imagine that grep would do the job in one line, but I can't seem to find an example of this.

I'm working in OS X.

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