Re: Re: [gentoo-user] How to shred without deleting /dev/*

Re: Re: [gentoo-user] How to shred without deleting /dev/*

[Michael Kintzios]

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> From:: Renat Golubchyk <ragermany@gmx.net>
> To: gentoo-user@lists.gentoo.org
> Subject: Re: [gentoo-user] How to shred without deleting /dev/*
> Date: Mon, 29 Aug 2005 14:35:28 +0200
> 
> Why was it deleted? Did you run the command as root?

Well, yes because when I run it as a plain user I am denied access:
====================
$ shred -u -v /dev/fd0
shred: /dev/fd0: Permission denied
====================

> What's wrong with good old dd? How about
>   $ dd if=/dev/zero of=/dev/fd0
> You can also use /dev/random if it has to be more secure. For even more
> security run it multiple times in a loop.

There's nothing wrong with dd, but I see no reason to create my own script to extend the basic dd functionality.  I would rather use shred which does everything I want it to do - if only I can avoid the deletion if the device node itself.
-- 
Regards,
Mick

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Re: Re: [gentoo-user] How to shred without deleting /dev/*

[Michael Kintzios]

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> From:: Sergio Polini <sp_rm_it@yahoo.it>
> To: gentoo-user@lists.gentoo.org
> Subject: Re: [gentoo-user] How to shred without deleting /dev/*
> Date: Mon, 29 Aug 2005 15:09:36 +0200

> Why -u?
> From the man page:
> 
> ========
> Delete FILE(s) if --remove (-u) is specified.  The default is not to
> remove  the  files because it is common to operate on device files
> like /dev/hda, and those files usually should not be removed.
> ========

Oops, I brushed over it too fast and missed this rather important point!  So, the -u option should NOT be used on devices.  ;-)  Thanks Sergio!
-- 
Regards,
Mick

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