file scrubbing

[Geoff Crompton <geoff.crompton@bjhcontrols.com.au>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


  Does anyone know of any file scrubbing tools? Something that will zero out 
the contents of a file, or overwrite it with random data? Previously I have 
done things find the file size, and use 
  $dd if=/dev/zero of=targfile bs=1 count=filesize
  But I am not certain that this overwrites the actual inode locations on 
disk, and it is clumsy to work out the file size before hand.
  Something like the following would be great:

  $ scrub -r -R -d dir

  Where the -r would recurse, the -R would randomize it (instead of filling 
with zeros) and the -d would sync and then rm the file.

  Cheers
  Paranoid Geoff ;)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE9U0+6x8QbdaYmRS8RArtmAKDKhHRdMhPGYLNu15O4XXK8ahaKAwCfWiNY
V9S01p5atER9kba9ymTtoM4=
=zAmr
-----END PGP SIGNATURE-----