I want to 'vagrant destroy' and 'vagrant up' vms when on the train, plane and bus

rsync_provisioner.rb

# Vagrant Rsync Provisioner
#
# TODO: Make the download commands available via 'vagrant rsync_download'
#
# == Motivation ==
#
# I want to 'vagrant destroy' and 'vagrant up' vms when on the train, plane and
# bus. Not fetching debian packages also tends to make provisioning with chef
# faster.
#
# == Installation ==
#
# Put this in a file named 'rsync_provisioner.rb' in the directory where your
# Vagrantfile is.
#
# == Configuration ==
#
# Add this to your Vagrantfile (in this case it's smart to place this before
# the chef_solo section):
#
#  config.vm.provision RsyncProvisioner do |rsync|
#    rsync.paths = {
#      "apt_cache/" => "/var/cache/apt/",
#    }
#  end
#


class RsyncProvisioner < Vagrant::Provisioners::Base

  class Config < Vagrant::Config::Base
    attr_accessor :paths
  end


  def rsync_opts
    ssh_user         = vm.env.config.ssh.username
    ssh_port         = vm.ssh.port
    private_key_path = vm.env.config.ssh.private_key_path

    "rsync -avzP --rsync-path='sudo rsync' -e 'ssh -i #{private_key_path} -p #{ssh_port} -l #{ssh_user}'"
  end

  def provision!

    puts
    puts "# To download rsync.paths from the vm, use these commands:"

    config.paths.each do |local_path, vm_path|
      download_cmd = "# #{rsync_opts} :#{vm_path} #{local_path}"
      puts download_cmd
    end

    puts
    puts "# Provisioning with rsync:"
    puts

    config.paths.each do |local_path, vm_path|

      upload_cmd = "#{rsync_opts} #{local_path} :#{vm_path}"
      puts upload_cmd

      system upload_cmd
    end

    puts

  end
end