is_wordpress.rb

#!/usr/bin/env ruby

require 'wpscan'
require 'uri'

filename = ARGV[0]

def check_wordpress( website )
  WPScan::Browser.instance( disable_tls_checks: true )

  WPScan::Target.new( website ).wordpress?(:mixed)
end

File.foreach( filename ).with_index do |website, line_num|
  website      = website.chomp!
  is_wordpress = check_wordpress( website )

  puts "#{line_num} #{website} #{is_wordpress}"
end