I just uploaded wit-2.10a to Debian experimental (it has to pass the NEW queue first, though).

WIT (Wiimms ISO Tools) is a set of command-line tools to manipulate Wii and GameCube ISO images and WBFS containers. It is useful (for me) to store backups of my Wii games on a USB hard disk drive. This saves me the optical disc juggling, doesn’t wear off the discs as fast and gives faster load times.

Here is an example session where I format one partition of the USB hard disk with WBFS and then copy my old WBFS image over to it:

$ wwt format -v --force /dev/sde3

wwt: Wiimms WBFS Tool v2.10a r0 x86_64 - Dirk Clemens - 2013-01-02

FORMAT BLOCK DEVICE /dev/sde3 [172 GiB, hss=512]
** 1 file formatted.

$ wwt add --part /dev/sde3 /media/sde1/wbfs/The\ Legend\ of\ Zelda\ Skyward\ Sword\ \[SOUP01\]/*.wbfs
*****  wwt: Wiimms WBFS Tool v2.10a r0 x86_64 - Dirk Clemens - 2013-01-02  *****
WBFSv1 #1/1 opened: /dev/sde3
 - ADD 1/1 [SOUP01] WBFS:/media/sde1/wbfs/The Legend of Zelda Skyward Sword [SOUP01]/SOUP01.wbfs/#0
* WBFS #1: 1 disc added.
wwt add --part /dev/sde3   0,02s user 7,66s system 2% cpu 5:02,68 total

$ wwt list

ID6     1/500 discs (4 GiB)
---------------------------------------------------------------------
SOUP01  The Legend of Zelda Skyward Sword
---------------------------------------------------------------------
Total: 1/500 discs, 4176 MiB ~ 4 GiB used, 171444 MiB ~ 167 GiB free.