Sterilizing free space

[Peter]

> On Tue, Jan 03, 2006 at 12:42:01PM -0500, Sy Ali wrote:
>> On 1/3/06, Lennart Sorensen <lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org> wrote:
>>> dd if=/dev/random of=/dev/device might be good, but much slower
>>> obviously.
>>
>> Thanks for the tip.. I didn't realise there was another source of data
>> to draw on.
>>
>> If there is zero, is there some sort of "one" that exists somewhere?

yes "*empty"|dd of=/dev/hdx bs=16k

The string passed to yes must be literal (no escapes etc). If you need 
to print something fancy try:

yes `echo -e "\xxx\yyy"`|dd of=...

The printf command on my system is broken (Debian). printf %c '\007' 
prints '\' (should ring the bell).

Peter
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