Creating the virtual machine using Vagrant

Note: for the examples below, you will need to have at least Vagrant version 1.8.1 installed on your local computer
And I setup ubuntu 14.04 64bit, with other os visit.

My Script: file name "Vagrantfile" (no extend )

Vagrant.configure(2) do |config|
  config.vm.box = "ubuntu/trusty64"
  #config.vm.network "private_network", ip: "192.168.11.31"
  config.vm.network "public_network", ip: "192.168.11.31"

  config.vm.synced_folder "/Volumes/Lef/Ubuntu", "/home/vagrant/working", create: true 
  config.vm.provider "virtualbox" do |vb|
    vb.name = "ubuntu-trusty64"
    vb.gui = false
    vb.memory = 2048
    vb.cpus = 2
  end
  config.vm.provision "shell", inline: <<-SHELL
     sudo apt-get update
     sudo apt-get install -y whois git
     sudo useradd -m -p `mkpasswd password` -s /bin/bash madman
     sudo usermod -a -G sudo madman
  SHELL
end

Thanks!