From: fox foxmaster <lists@...>
Date: 2012-04-16T15:27:34+09:00
Subject: insert text after line "whatever"

Hi all,

I have a problem that I am struggling with.

Problem I have is that I want to insert text in a text file after a
specific line.

My thought was to copy the original file line by line and when I got to
a specific line it would insert the text that I wanted, but I did not
manage to do this so I went another way, like this

  File.open('test.bak', 'r+') do |file|
    file.each do |line|
      if line =~ /\<\/DHCPServer>/  #trigger
        file.seek(-line.size, IO::SEEK_CUR)
        file.puts ("Hello") #text to input
      end
    end
  end

But when I use this, first it manipulates the original file and it
deletes some of the letter of the trigger "</DHCPServer>"

So can someone guide me to the right path?

Regards
Fox

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