How to get the IP address of my local machine in Ruby?

Question

I am doing Rails development in Ubuntu 12.04LTS OS.

I want to capture my local IP address in a file, not the loopback 127.0.0.1, the one which I get using ifc

Answer 1

Write below method

def self.local_ip
    orig, Socket.do_not_reverse_lookup = Socket.do_not_reverse_lookup, true
    UDPSocket.open do |s|
      s.connect '64.233.187.99', 1
      s.addr.last
    end
    ensure
      Socket.do_not_reverse_lookup = orig
 end

and then call local_ip method, you will get ip address of your machine.

Eg: ip_address= local_ip