From: Robert Hansen <lists@...>
Date: 2012-06-04T23:01:33+09:00
Subject: Re: Read from several .txt files by a pattern and write the matched lines to a new file

Robert Hansen wrote in post #1063024:
> $files = Array.new
>
> Dir.glob("**/Msg.log").entries.each { |n| $files.push(n) if
> File.file?(n) }
> puts "\n#{$files.size} files found\n"
>
> pattern = /(failed)/m
>
> $files.each do |element|
>          f = File.open(element, 'r')
>               lines = f.readlines
>               lines.each do |line|
>                   if line.match(pattern)
>              File.open('newfile.txt', 'w') do |write|  <-- Problem
>                      write.puts(line)
>                         end
>                      end
>                    end
>                      f.close
>                 end
>
> My problem is where the "if statement" begins. I am sorry to say that my
> compiler does not give me any error message, but the "newfile.txt" will
> not be created and therefore not written to. This makes no sense to me
> since I am a new beginner at Programming/scripting
>
> As for your code,
>
> "$ find . -type f -name Msg.log -exec fgrep failed {} + >newfile.txt"
>
> looks pretty and neat, but I am afraid it is way over my head.
>
> Kind regard, Robert Hansen


Somewhere in the script i changed the working directory, so it was my
mistake, but feel free to suggest better code. Everything will be
appreciated as I am still learning.

Kind regard Robert Hansen

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