File-copy checker?

I seem to recall that, at some time in the past, there was a way to
check the fidelity of a file copy against the original, to make sure
the copy was exactly like the original - no bit errors, etc. Does
anyone know of a way to do that today? Thanks for any help.



"Politicians are conniving, wheeler-dealing scum. Don't have a fit of morals
over them; they wouldn't, over you."
--Harry Pearce, "MI-5"

On Sun, 05 Apr 2009 18:56:25 -0500, "" <> wrote:

>I seem to recall that, at some time in the past, there was a way to
>check the fidelity of a file copy against the original, to make sure
>the copy was exactly like the original - no bit errors, etc. Does
>anyone know of a way to do that today? Thanks for any help.
The reason I ask is that I'm copying a LOT of graphics and text files
to a backup, and I'd like to make absolutely sure my files are safe
without having to test-view each and every one.



"Politicians are conniving, wheeler-dealing scum. Don't have a fit of morals
over them; they wouldn't, over you."
--Harry Pearce, "MI-5"

On Sun, 05 Apr 2009 18:56:25 -0500, wrote:

> I seem to recall that, at some time in the past, there was a way to
> check the fidelity of a file copy against the original, to make sure the
> copy was exactly like the original - no bit errors, etc. Does anyone
> know of a way to do that today? Thanks for any help.
>
>
>
> "Politicians are conniving, wheeler-dealing scum. Don't have a fit of
> morals
> over them; they wouldn't, over you."
> --Harry Pearce, "MI-5"

md5sum is generally used on ISO disk images. You simply run it on the
original file and then on the copy.