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Re: dd
On Thu, Mar 23, 2000 at 09:06:10PM +0300, Gaal Yahas wrote:
> On Thu, Mar 23, 2000 at 09:00:21PM +0200, Adi Stav wrote:
> > > Say you want to back up your machine completely onto another.
> > >
> > > backup% nc -l -p 12345 > host.raw
> > > host% dd if=/dev/hda | nc backup 12345
> > >
> > > If host gets messed up, boot a rescue diskette on it, set up the
> > > network, and do:
> > >
> > > host% nc -l -p 12345 | dd of=/dev/hda
> > > backup% dd if=host.raw | nc host 12345
> >
> > Hmm... Can't find any nc command on either a Red Hat or a Debian
> > system. Looks pretty cool though. Now... I can't try rsh on this
> > network here, but how about:
>
> netcat is an *extremely* useful utility. Check it out on
> www.l0pht.com (sorry, don't remember the exact URL, and netvision
> seem to drop 98% of my packets there right now, so I can't check).
Thanks! :) Available as package "netcat" in Debian, now that I know
the full name.
> > host% dd if=/dev/hda1 | rsh backup "dd of=host.raw"
> >
> > > The degree by which you could trust cat or cp is unknown to me. In
> > > these cases, I still use dd for something else than in vi <g>
> >
> > Trust?
>
> Sure, trust. Cats can be wonderful, but would you trust one to
> transfer your disk over the network?
Why not? Wouldn't the network be the weak link here... Does the cat
have a greater chance than dd to... to doing what, really? (Feeling
like I'm missing something obvious...)
> --
> believing is seeing
> gaal@forum2.org
> http://www.forum2.org/gaal/
- Adi Stav
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