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Re: Preloading capability in linux ??///
On Fri, 24 Nov 2000, Anand Kumria wrote:
> On Thu, Nov 23, 2000 at 09:04:32AM -0800, Anmol Khirbat wrote:
> > On Thu, 23 Nov 2000, Anand Kumria wrote:
> > > Do you want to create a bit-for-bit disk copy/image? I'd recommend
> > > dd(1) then.
> > What does dd do that cat can't do ?
> $ man 1 cat | head
> cat - concatenate files and print on the standard output
> $ man 1 dd | head
> dd - convert and copy a file
> dd can read and write a file in blocks thus speeding up the transfer
> whereas cat relies on the underlying C library to do it I/O.
Show me a program that doesn't use the "underlying C library" to do I/O.
> dd can also convert from ascii to ebcdic, and do quite a few
> other things. the man page is illuminating.
Whats all this got to do with a "bit-for-bit" disk copy?