On the page you are referring to, it has the alternative/complicated way of checking: shasum -a 256 -c <<< ‘(hashToCompare) mode character’
In my case I got the ‘FAILED’ output.
I’m guessing shasum 5.84 doesn’t understand BSD-style checksums. According to the changelog that comes with Fedora’s shasum, the BSD-style --tag option was added in shasum 6.00 in 2017.
This is BSD-style:
SHA256 (Fedora-Workstation-Live-x86_64-38-1.6.iso) = 7a444a2e19012023bf0b015ae30135bafc5fd20f4f333310d42b118745093992
This is GNU-style:
7a444a2e19012023bf0b015ae30135bafc5fd20f4f333310d42b118745093992 Fedora-Workstation-Live-x86_64-38-1.6.iso
By the way, shasum 5.84 is from 2013.
I assume that by now you have manually verified that your download has the correct checksum, but if could be helpful to others to fully understand the failure and hopefully provide a workaround to make things easier in the future.
You could try creating a file using shasum -a 256 --tag ISO_name > ISO_name.SHA256 and see if sha1sum -c ISO_name.SHA256 gives an acceptable format and an “OK” result.
You can convert the format
perl -pe 's/SHA256 \(([^)]+)\) = ([0-9a-f]+)/$2 $1/;' Fedora-Workstation-38-1.6-x86_64-CHECKSUM > newchecksum
shasum -a 256 -c newchecksum
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