[clue-tech] Terse command lines

[chris fedde]

On Wed, Jul 1, 2009 at 9:43 AM, Brian Gibson<bwg1974 at yahoo.com> wrote:
>
> just to confirm, zeroing out a file is for security/privacy since deleting a file normally doesn't remove the data but simply mark that area of the disk for reallocation, correct?
>
>

Correct.   Deleting a file just removes it from the directory and adds
the blocks back to the free list.

Of course things like "> filename" just set the file length to zero
and put the blocks back on the free list.
It does not overwrite any data either.