def meta(self, remotepath = '/', fmt = '$t $u $f $s $c $m $i $b'):
		''' Usage: meta <remotepath> [format] - \
get information of the given path (dir / file) at Baidu Yun.
  remotepath - the remote path
  format - specifies how the list are displayed
    it supports all the format variables in the 'list' command, and additionally the followings:
	$i - fs_id
	$b - MD5 block_list
	$u - Has sub directory or not
'''
		rpath = get_pcs_path(remotepath)
		return self.__meta(rpath, fmt)
Usage: meta <remotepath> [format] - \
get information of the given path (dir / file) at Baidu Yun.
  remotepath - the remote path
  format - specifies how the list are displayed
    it supports all the format variables in the 'list' command, and additionally the followings:
	$i - fs_id
	$b - MD5 block_list
	$u - Has sub directory or not