From: Rodrigo Bermejo <rodrigo.bermejo@...>
Date: 2008-06-26T09:42:44+09:00
Subject: Re: How to find second match in a file

Cheyne Li wrote:
> Hi, everyone
> 
> My code opens a file and read line by line to find a given string as
> first match. After I found one, how can i find the second match, a
> different string, which is supposed to appear several lines after the
> line of first match in a fast way?
> 
> for example, the following is the contents of a file
> 
> ka;sdfjaskf;asdfjk
> skdfkfkfkfkfkfkfkfkfk
> aks;flasjklfjkassjfksa
> aaaaaaaaaaaaaaaaaaaaaaaa
> bbbbbasdfdask;fjsdkalf
> *************hello world***************ka;sdjkf;sjadkfj
> asdfkasjdkfldjaskl;jfklas;
> jaskdl;fjkasdjkfljdskla;jdfs
> jkasl;jfkasjdklfjsal;df
> asjkdfjkasd;fd;asdfj
> ***********Ruby*********a;sjdfklsdjal;fjkda;
> asdfjjasklfjkdasjkfjaskl;
> fjdka;dfdjasjfsd;a
> 
> So, after I found the match "hello world" by using a while loop, how can
> i find the "Ruby" in the same while loop?
> 
> Looking forward to your reply. Thanks in advance
Not sure why you need it ...but seems you can do what you need by simple 
doing this:
File.readlines("1.txt").each do |line|
   if line =~ /hello world/
      #do something
      p line
   end
   if line =~ /Ruby/
      #do something else
      p line
   end
end


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