INTERFACE_MAP = {
    :linux => {
      :methods => {
        :ifconfig => {
          :exec  => '/sbin/ifconfig',
          :token => 'inet addr: ',
        },
        :ip => {
          :exec  => '/sbin/ip addr show',
          :token => 'inet ',
        },
      },
    },
}

  def self.find_exec

    kernel = Facter.value(:kernel).downcase.to_sym
    unless map = INTERFACE_MAP[kernel] || INTERFACE_MAP.values.find { |tmp| tmp[:aliases] and tmp[:aliases].include?(kernel)
 }
      return []
    end
    methods = map[:methods]
    methods.each do |method|
      # Strip back to just the file
      file = method[:exec].split(' ').first
      if FileTest.exists?(file)
        return method
        break
      end
    end
  end