From Fedora Project Wiki
Description
This test is intended to verify that the posted ISO media matches the published sha256sum.
How to test
- Download the
.iso
media files you wish to test - Download the matching CHECKSUM file. For example,
Fedora-12-Beta-i386-CHECKSUM
. - Validate that the published CHECKSUM match the downloaded ISO files by running the command
sha256sum
. For example, you might type:sha256sum -c Fedora-12-Beta-i386-CHECKSUM
- Validate the md5sum imprinted inside the ISO image by running the command
checkisomd5
(if not available on your system, then "yum installisomd5sum
"). For example, to check all ISO files, you might type:for ISO in Fedora-*.iso ; do echo "= $ISO =" ; checkisomd5 $ISO ; echo; done
(Note: This check is not available for Live images)
Expected Results
- The command
sha256sum
should return OK results. For example:- $ sha256sum -c Fedora-12-Beta-i386-CHECKSUM
- Fedora-12-Beta-i386-DVD.iso: OK
- Fedora-12-Beta-i386-disc1.iso: OK
- Fedora-12-Beta-i386-disc2.iso: OK
- Fedora-12-Beta-i386-disc3.iso: OK
- Fedora-12-Beta-i386-disc4.iso: OK
- Fedora-12-Beta-i386-disc5.iso: OK
- Fedora-12-Beta-i386-netinst.iso: OK
- The command
checkisomd5
should indicate that it is OK to use this media for each ISO image. For example:- The media check is complete, the result is: PASS.
- It is OK to use this media.