Re: Suggestion for rm(1)

[Keisial]

Reuben Thomas wrote:
> On 10 March 2010 23:18, Keisial<address@hidden>  wrote:
>    
> > Reuben Thomas wrote:
> > > I am also trying to convey the fact that an expert can offer recover
> > > deleted data quickly *and* easily.
> > >
> > >        
> > Can him?
> > It largely depends on filesystem and content characteristics, but I don't
> > think that's "easy for experts".
> > It's much easier (and reliable) for the user to get an expert to do it,
> > though. :)
> >      
> I said that it is "often" easy for experts, not "always". I believe
> this is true, yes.
>    
There's a difference between offer and often :)

In my opinion, once you lose the block pointers, the problem becomes 
quite hard.
If it happens that all the blocks are contiguous, an expert can "view" 
the file in
the raw data. But otherwise i don't consider that any easy.
If it's a compressed file you could check all free blocks to see which 
ones match
appended to the file begin. That can be easy for the expert, but the 
algorithm
itself is O(n!).