vagrant/plugins/guests/debian/cap/rsync.rb

module VagrantPlugins
  module GuestDebian
    module Cap
      class RSync
        def self.rsync_install(machine)
          comm = machine.communicate
          if !comm.test("command -v rsync")
            comm.sudo <<-EOH.gsub(/^ {14}/, '')
              apt-get -yqq update
              apt-get -yqq install rsync
            EOH
          end
        end
      end
    end
  end
end