gistfile1.rb

#!/usr/bin/env ruby
# encoding: utf-8
require 'iconv'
ic = Iconv.new('UTF-8//IGNORE', 'UTF-8')
questions = []
print "Starting.."
Dir['*.txt'].each do |file|
    print "."
    questions << ic.iconv(File.open(file).read).downcase.split("\n")
end
questions.flatten!
puts "\n#{questions.length} loaded"
print "> "
while true
  str = gets.strip.downcase
  a = questions.select{|x|x.include?(str)}
  puts "#{a.length} responses for #{str}"
  puts a
  print "> "
end