Copy /etc/hosts and replace with public IP, for quickly setting up the hosts file on a windows VM

iehosts.rb

#!/usr/bin/ruby

require 'socket'

ip = Socket.ip_address_list.detect { |intf| intf.ipv4? and !intf.ipv4_loopback? }.ip_address
puts "ip: #{ip}"

IO.popen('pbcopy', 'w') do |f|
  f << File.read('/etc/hosts').gsub!(/.*127.*localhost/im, '').gsub!(/127\.0\.0\.1/im, ip)
end