Scrub free disk blocks

Steven Stern subscribed-lists at
Sat Aug 28 18:05:08 UTC 2010

On 08/27/2010 11:25 PM, JD wrote:
>   Is there a Linux util to scrub free disk blocks and keep everything 
> else intact ??

This really is an interested thread... but why do you want to scrub free

I can think of a few reasons:

1) You're running Linux in a virtual machine. Zeroing all free space
makes it easier to compress the image file.

2) You've been looking at something "bad" and want to make sure all
traces of it are gone before the lawyers/cops arrive.

There are probably other good reasons, but I'm stalled out here.

-- Steve

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