# File lib/phusion_passenger/abstract_installer.rb, line 342
        def prompt_confirmation(message)
                result = prompt("#{message} [y/n]") do |value|
                        if value.downcase == 'y' || value.downcase == 'n'
                                true
                        else
                                puts_error "Invalid input '#{value}'; please enter either 'y' or 'n'."
                                false
                        end
                end
                return result.downcase == 'y'
        rescue Interrupt
                raise Abort
        end