Examples:
--------
Imaging a device to a single output file with generation of md5 and sha1
hashes of the device:

$ ./dc3dd if=/dev/sda of=suspect.img hash=md5 hash=sha1 log=suspect.txt

Imaging a device to a set of CD-sized output files with generation of 
md5 and and sha1 hashes of the device:

$ ./dc3dd if=/dev/sda ofs=suspect.img.000 ofsz=650M hash=md5 hash=sha1
log=suspect.txt

Imaging a device to both a single output file and to a set of CD-sized
output files with generation of md5 and sha1 hashes of the device:

$ ./dc3dd if=/dev/sda of=suspect.img of=suspect.img ofs=suspect.img.000
ofsz=650M hash=md5 hash=sha1 log=suspect.txt

Imaging a device to both a single output file and to a set of CD-sized
output files with generation of md5 and sha1 hashes of the device
and md5 and sha1 hashes of the outputs:

$ ./dc3dd if=/dev/sda of=suspect.img hof=suspect.img hofs=suspect.img.000
ofsz=650M hash=md5 hash=sha1 log=suspect.txt

Restoring a set of image files to a device with verification hashes of 
only the bytes dc3dd writes to the device:
$ ./dc3dd ifs=suspect.img.000 phod=/dev/sdb hash=md5 hash=sha1 log=suspect-restore.txt

Restoring a set of image files to a device with verification hashes of 
both the bytes dc3dd writes to the device and the entire device:
$ ./dc3dd ifs=suspect.img.000 fhod=/dev/sdb hash=md5 hash=sha1 log=suspect-restore.txt

Wiping a drive:
$ ./dc3dd wipe=/dev/sdb log=wipe.txt

Wiping a drive with verification:
$ ./dc3dd hwipe=/dev/sdb hash=md5 hash=sha1 log=wipe.txt