Question

Hi I want to store whole console out put generated by all steps of while loop using.
I can store console output in one text file for first step of while loop but after this my loop is terminated.
Code snippet is below:

while line = f.gets do
    puts "value: #{line}"
    newuri = a.to_s.gsub('fuzz',"#{line}")
    print "Attack Request:\n\n#{newuri}\n"
    nuri = URI.parse("#{newuri}")
    Net::HTTP.start(nuri.host, nuri.port) do |http|
    request = Net::HTTP::Get.new nuri.request_uri
    response = http.request request 
    puts "Response"
    puts response.body
            $stdout = File.new('out.txt','w')
    end
end

Answer 1

I must admit that your question is a little unclear. I assume that you have a file with addresses, and you want to have a file with the responses received from these addresses.

Why are you trying to redefine $stdout? Maybe all you need is to puts the text directly to the "out.txt" file?

Try this: (I have removed all “unimportant” details)

File.open('out.txt','w') do |outfile|
  while line = f.gets do
    puts         "value: #{line}" # This is a "debug" info
    outfile.puts "value: #{line}" # This goes to the output file
    # ...
    Net::HTTP.start(nuri.host, nuri.port) do |http|
      request = Net::HTTP::Get.new nuri.request_uri
      response = http.request request 
      outfile.puts "Response"
      outfile.puts response.body
    end
  end
end

So, if I understood your problem correctly, you do usually do not need to “redefine” standard output, but you just have to put the data into the correct file. The method puts exists also for opened files, and just “by default” writes to the standard output.

In addition, I suggest using standard error instead standard output if you want some debugging information (not in this snippet of code – just in some other situations where it might be useful):

$stderr.puts "Some warning"

or

STDERR.puts "Some warning"

..whichever looks better for you. Both variable and the constant contain the same object.