ubuntu: destroy a huge binary file and make it non-readable.

[Nandakumar]

Hi,
The program is ready even though it is not named yet! I call it simply
'File Destroyer'. I think it meets your requirements.

An alpha version can be downloaded:
http://nandakumar.co.in/private/filedest

run this command to install
sudo cp filedest /usr/bin/

usage: filedest <inputfile>

Use carefully since no crash-handling functions are written yet.

I can release it soon (of course, under GPL).

On 1/26/14, robert rottermann <robert at redcor.ch> wrote:
> hi Nandakumar,
> can you tel us a bit more about that program
> is there a repository somewher so we migth use/help to debut it?
> thanks
> robert
> On 26.01.2014 12:34, Nandakumar wrote:
>> This package may help you:
>> https://launchpad.net/gopanam/+download
>>
>> You encrypt the file with a key, and if the key is unknown, even the
>> developer can't decrypt it.
>>
>> On 1/26/14, John R. Sowden <jsowden at americansentry.net> wrote:
>>> On 01/26/2014 01:51 AM, Johnny Rosenberg wrote:
>>>> 2014-01-25 ping song <songpingemail at gmail.com
>>>> <mailto:songpingemail at gmail.com>>
>>>>
>>>>      thanks.
>>>>      but guess I haven't make it clear.
>>>>
>>>>      my goal is to :
>>>>      1) not to delete the file, not to chmod either
>>>>      2) don't change the file size either
>>>>      3) make the gzip file not being able to ungzipped and viewed -
>>>>      just to mess up the file and make it not usable (what I meant
>>>>      "destroy").
>>>>
>>>>      I finally use GNU "head" to delete the last a couple of lines like
>>>>      this:
>>>>
>>>>      head --lines=-100 myfile.gz > newfile.gz
>>>>
>>>>      after this , gzip can't recogize it. that's it.
>>>>
>>>>      but , I doubt this is not the safe way, coz an gzip expert might
>>>>      be easily open the binary file and fixed the missed lines (I'm not
>>>>      sure).
>>>>
>>>>      maybe I better 'sort' the whole file, or, swap randomly some
>>>>      lines, so there is no way the file can be read...
>>>>
>>>>
>>>>
>>>> I know this is way off topic, but I'm just curious: Why do you want to
>>>> do this? Is the file ever going to be readable again? If not, why not
>>>> just delete it...? If you want to be able to open the file yourself
>>>> but nobody else, why not just protect it (encrypt it) with a password?
>>>>
>>>> Johnny Rosenberg
>>>>
>>>>
>>>>
>>>>
>>>>      On Sat, Jan 25, 2014 at 12:09 PM, Liam Proven <lproven at gmail.com
>>>>      <mailto:lproven at gmail.com>> wrote:
>>>>
>>>>          On 25 January 2014 16:17, ping song <songpingemail at gmail.com
>>>>          <mailto:songpingemail at gmail.com>> wrote:
>>>>          > may sounds like a sin, but I just wanna know the best way to
>>>>          change a binary
>>>>          > file without actually open it (since it's really huge)?
>>>>
>>>>          Your subject says "destroy". To me that would seem to mean
>>>>          securely erase.
>>>>
>>>>          But your body text seems to ask about editing it.
>>>>
>>>>          As such, I do not understand what you mean.
>>>>
>>>>          If you do mean secure erase, read this:
>>>>
>>>>
>>>> http://askubuntu.com/questions/57572/how-to-delete-files-in-secure-manner
>>>>
>>>>
>>>>          --
>>>>          Liam Proven . Profile: http://lproven.livejournal.com/profile
>>>>          Email: lproven at cix.co.uk <mailto:lproven at cix.co.uk> .
>>>>          GMail/G+/Twitter/Flickr/Facebook: lproven
>>>>          MSN: lproven at hotmail.com <mailto:lproven at hotmail.com> .
>>>>          Skype/AIM/Yahoo/LinkedIn: liamproven
>>>>          Tel: +44 20-8685-0498 <tel:%2B44%2020-8685-0498> . Cell: +44
>>>>          7939-087884 <tel:%2B44%207939-087884>
>>>>
>>>>
>>> we're all sitting on the edge of our chairs waiting for this answer :)
>>>
>>>
>
>
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