Manual Reference Pages - OBLITERATE (8)
- scrub bits off magnetic media
overwrites the named
with a pattern designed to securely remove the data from the surface of
most modern disk drives.
(force) option will
files even if they are marked read-only, as long as they are owned
by the user, or will allow overwriting of a character-special file,
such as a raw disk device. The
(verbose) option causes
to report on the progress in scrubbing and removing each file.
options will make the program more vebose. Currently, only two
does not control the cache on the disk drive, which may interfere
with the proper writing of the data to the physical media. This
program should disable the cache on the device if possible, but
that is beyond the scope of the current development effort.
and this man page were written by Wes Peters <email@example.com>
for the FreeBSD Project.
The data patterns used to overwrite the file[s] are taken from a
paper entitled "Secure Deletion of Data from Magnetic and Solid-State
Memory" by Peter Gutman of the Department of Computer Science,
University of Auckland <firstname.lastname@example.org>.
command first appeared in FreeBSD 3.3. It grew the ability to
overwrite disk devices in FreeBSD 5.3, to scrub a disk clean for
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