Re: Preloading capability in linux ??///

[Anmol Khirbat <anmol@xxxxxxxxxxx>]

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?

bye :)
Anmol