andrzej zaborowski wrote:
I don't know if you mean just zeroing unused parts or reordering the
data and stuff like defragmentation. If you mean the former, there's a
universal method:
dd if=/dev/zero of=xxx; rm xxx
where xxx is a path to a new file on the filesystem, which must be
mounted. It will creata a zero filled file there, which will fill all
availiable space, and remove the file afterwards. I used this when I
needed to send filesystem images through internet so that they
compressed well.
If you add dd=<a-big-number-here> it might take less time to write the
file.
Oops, I mean "bs=" ofcourse.
Yep, been doing similar, but the neato wipe programs generally also do cluster tails and unused
directory entries and allow a really great compression ratio. Ta for the advice though.
Brad
--
"Human beings, who are almost unique in having the ability
to learn from the experience of others, are also remarkable
for their apparent disinclination to do so." -- Douglas Adams
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