Confirming checksum of iso

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http://forums.fedoraforum.org – I followed the instructions here: http://fedoraproject.org/en/keys as best I can -- and I wouldn't bother with it but I may want to do this again; so I'd like to figure it out. I'm on CentOS 5.4, I imported the keys ok and when I do the rpm command this is what happens: Code: rpm {-K|--checksig} F12-Beta-x86_64-Live.iso bash: --checksig}: command not found RPM version I did manage to get a sha256 sum of the iso, thusly: Code: sha256sum F12-Beta-x86_64-Live.iso a03cde18f52d767b7542274294556da1d9a70c1e702a6664da78fe805ea865fa  F12-Beta-x86_64-Live.iso but I have no place to confirm if it's valid ??: When I did the gpg verify, this is what I get: Code: gpg --verify *-CHECKSUM gpg: directory `/root/.gnupg' created gpg: new configuration file `/root/.gnupg/gpg.conf' created gpg: WARNING: options in `/root/.gnupg/gpg.conf' are not yet active during this run gpg: keyring `/root/.gnupg/pubring.gpg' created gpg: can't open `*-CHECKSUM' gpg: verify signatures failed: file open error I tried this the first time as my non-root user, and got the file open error so I su'd into root and it appeared to get farther, but still got an error. When it originally imported the keys, the value matched for F12 (namely: gpg: key 57BBCCBA: public key "Fedora (12) <fedora@fedoraproject.org>" imported) I'm feeling pretty clueless, I'm just going to burn the CD but I'd like to know what I'm missing here? Mostly for future reference (and others who may have similar issues...) :confused: (HowTos)