From: Robert Hansen <lists@...>
Date: 2012-06-04T22:32:30+09:00
Subject: Re: Read from several .txt files by a pattern and write the matched lines to a new file

$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

-- 
Posted via http://www.ruby-forum.com/.