this is small script will fecth the results of cbse 12th grade results.

fetch_cbse_result.rb

require "uri"
require "net/http"
require "nokogiri"
require "logger"

name_final = Array.new
uri = URI.parse("http://resultsarchives.nic.in/cbseresults/cbseresults2004/class12/cbse12.asp")

req = Net::HTTP::Post.new(uri.path, {
  'Referer' => "http://resultsarchives.nic.in/cbseresults/cbseresults2004/class12/cbse12.htm",
  'User-Agent'=> "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)",
  'Host' => "resultsarchives.nic.in",
  'Origin' => "http://resultsarchives.nic.in"
  })

  (622****..622****).each do |roll_no|
    puts "################ #{roll_no}"
    req.set_form_data({'regno' => roll_no,'B1' => 'Submit'})

    http = Net::HTTP.new(uri.host, uri.port)

    http.set_debug_output($stdout)
    http.set_debug_output(Logger.new("/tmp/restclient.log"))
    http.open_timeout = 40
    http.read_timeout = 20

    # Request page:
    begin
      resp = http.request(req)
      html_doc = Nokogiri::HTML(resp.body)
      puts "#################{html_doc.css('table[2]').css('tr[2]').text}"
      name_final << html_doc.css('table[2]').css('tr[2]').text
    rescue Exception
      puts "Exception requesting the page; returning"
    end
    
    puts name_final

  end