On 22/04/2008, Sven Joachim <svenjoac@gmx.de> wrote: > No, you would only zero out the disk if you cat /dev/zero to it. > Catting /dev/null immediately returns and does nothing. Hm at least catting /dev/null to a full file makes the file now be 0 bytes long. I'm not going to test what it does to my hard drive, of course. ;-) - Jordi G. H.