6.6 statvfs ---
Constants used with os.statvfs()
The statvfs module defines constants so interpreting the result
if os.statvfs(), which returns a tuple, can be made without
remembering ``magic numbers.'' Each of the constants defined in this
module is the index of the entry in the tuple returned by
os.statvfs() that contains the specified information.
F_BSIZE- Preferred file system block size.
F_FRSIZE- Fundamental file system block size.
F_BLOCKS- Total number of blocks in the filesystem.
F_BFREE- Total number of free blocks.
F_BAVAIL- Free blocks available to non-super user.
F_FILES- Total number of file nodes.
F_FFREE- Total number of free file nodes.
F_FAVAIL- Free nodes available to non-super user.
F_FLAG- Flags. System dependent: see statvfs() man page.
F_NAMEMAX- Maximum file name length.
