if=/dev/urandom, is what I'd use. But I've read that
traces of the original magnetic domains can be recovered after
being over-written. Maybe alternate if=/dev/zero with the file
writes from /dev/random, and repeat the process a few times?
[EMAIL PROTECTED] wrote:
>
> On Mon, May 06, 2002 at 02:37:45PM -0400, Sharon Nagao wrote:
>
> > Does anyone know of an application that can overwrite
> > a file such that it is virtually impossible to read
> > the data in the file back from disk using forensic
> > methods on unix machines (Irix in particular).
>
> Searching Freshmeat <http://freshmeat.net/> in the "Software" section
> turns up a bunch of promising shell utilities, most (all?) of which
> should work on Irix. Apparently, examples include `overwrite`,
> `wipe`, `srm` and "secure delete." I've also seen a `saferm`
> mentioned somewhere, but didn't see it on Freshmeat.
>
> Personally, I still do something like:
> dd if=/dev/urandom of=file_to_erase bs=123k count=1
> (but I've rarely been accused of keeping up with the times :-)
>
> If you do it manually, the key thing is to not leave temporary or
> otherwise orphaned copies on disk, as most editors will do.
>
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