zerofree(8) on Linux
The text 115f934dcb00, as Debian 5.0 (Lenny) shipped it.
zero free blocks from ext2/3 file-systems
Flags it lists
-
-n -
-v
The text 115f934dcb00, as Debian 5.0 (Lenny) shipped it.
zero free blocks from ext2/3 file-systems
-n
-v