Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
obliterate(8)		  BSD System Manager's Manual		 obliterate(8)

NAME
     obliterate	-- scrub bits off magnetic media

SYNOPSIS
     obliterate	[-fv] file [file...]

DESCRIPTION
     obliterate	overwrites the named file[s] with a pattern designed to	se-
     curely remove the data from the surface of	most modern disk drives.

     The -f (force) option will	obliterate 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 -v (verbose)
     option causes obliterate to report	on the progress	in scrubbing and re-
     moving each file.	Specifying multiple -v options will make the program
     more vebose.  Currently, only two are useful.

BUGS
     obliterate	does not control the cache on the disk drive, which may	inter-
     fere 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.

SEE ALSO
     rm(1), http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html

AUTHOR
     obliterate	and this man page were written by Wes Peters <wes@soft-
     weyr.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 <pgut001@cs.auckland.ac.nz>.

HISTORY
     The obliterate command first appeared in FreeBSD 3.3.  It grew the	abil-
     ity to overwrite disk devices in FreeBSD 5.3, to scrub a disk clean for
     Rob Weinberg.

FreeBSD				  May 2, 1999			       FreeBSD

NAME | SYNOPSIS | DESCRIPTION | BUGS | SEE ALSO | AUTHOR | HISTORY

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=obliterate&sektion=8&manpath=FreeBSD+12.0-RELEASE+and+Ports>

home | help