From: Josh Cheek <josh.cheek@...>
Date: 2011-08-19T04:13:25+09:00
Subject: Re: Searching in a directory

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On Thu, Aug 18, 2011 at 12:44 PM, Yu Yu <htwoo@web.de> wrote:

> Hello,
>
> I want to search for an string in all .txt - files of an directory.
> Could you give me sample code, please ??
>
>
If you're on Unix:
$ find . -name '*.txt' | xargs grep 'your string here'

In Ruby:
Dir["**/*.txt"].each do |filename|
  lines = File.readlines(filename).grep(/your string here/)
  p filename => lines unless lines.empty?
end

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