What am I missing here? (sha256sum)

[Michael Schwendt]

On Tue, 21 Sep 2010 10:51:20 -0700, JD wrote:

> $ sha256sum -c Fedora-13-i386-DVD.iso CHECKSUM
> sha256sum: Fedora-13-i386-DVD.iso: no properly formatted SHA256 checksum 
> lines found
> Fedora-13-i386-DVD.iso: OK

Of course.
That's not how you are supposed to run it. You give it the checksums file
NOT the iso file. sha256sum -c ... only takes checksum files.