utility prints out the super block and cylinder group information
for the file system or special device specified, unless the
flag is specified.
The listing is very long and detailed.
command is useful mostly for finding out certain file system
information such as the file system block size and minimum
free space percentage.
is specified, a sorted list of all free fragments and free fragment ranges,
as represented in cylinder group block free lists, is printed.
If the flag is specified twice, contiguous free fragments are not collapsed
into ranges and instead printed in a simple list.
Fragment numbers may be converted to raw byte offsets by multiplying by the
fragment size, which may be useful when recovering deleted data.
is specified, a
command is printed that can be used to generate a new file system
with equivalent settings.