Ask for a email and password in Linux terminal

ask_for_credentials.rb

# encoding: utf-8

class AskForCredentials
  attr_reader :email, :password

  def initialize
    ask_for_credentials
  end

  private

  def ask_for_credentials
    puts "Enter your credentials."

    print "Email: "
    @email = ask

    print "Password (typing will be hidden): "
    @password = ask_for_password

    nil
  end

  def ask
    $stdin.gets.to_s.strip
  end

  def ask_for_password
    echo_off
      password = ask
      puts
    echo_on

    return password
  end

  def echo_off
    with_tty do
      system "stty -echo"
    end
  end

  def echo_on
    with_tty do
      system "stty echo"
    end
  end

  def with_tty(&block)
    return unless $stdin.isatty
    yield
  end
end


c = AskForCredentials.new
puts c
puts "Email: #{c.email}, Password: #{c.password}"