code: def _update_gecos(name, key, value):
      '''
      Common code to change a user's GECOS information
      '''
      if not isinstance(value, six.string_types):
          value = six.text_type(value)
      pre_info = _get_gecos(name)
      if not pre_info:
          return False
      if value == pre_info[key]:
          return True
      gecos_data = copy.deepcopy(pre_info)
      gecos_data[key] = value
      cmd = ['usermod', '-c', _build_gecos(gecos_data), name]
      __salt__['cmd.run'](cmd, python_shell=False)
      post_info = info(name)
      return _get_gecos(name).get(key) == valuf _update_gecos(name, key, value):
      '''
      Common code to change a user's GECOS information
      '''
      if not isinstance(value, six.string_types):
          value = six.text_type(value)
      pre_info = _get_gecos(name)
      if not pre_info:
          return False
      if value == pre_info[key]:
          return True
      gecos_data = copy.deepcopy(pre_info)
      gecos_data[key] = value
      cmd = ['usermod', '-c', _build_gecos(gecos_data), name]
      __salt__['cmd.run'](cmd, python_shell=False)
      post_info = info(name)
      return _get_gecos(name).get(key) == value
docs: Common code to change a user's GECOS information