Correct sha256sum invocation

[alansill]

Avoid formatting error message when performing SHA256 check

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[alansill]

Still needs work.

[sspencerwire]

@alansill Not sure why you closed this... I was in the process of checking it and you are correct that the checksum does not display with the command included in the document and that your command syntax does, in fact, display the checksum. Both commands generate a syntax error of sorts on my Ubuntu machine... (yes, I know... Ubuntu)...

Your command:

grep "(Rocky-8.5-x86_64-minimal.iso)" CHECKSUM | sha256sum Rocky-8.5-x86_64-minimal.iso
grep: CHECKSUM: No such file or directory
4eb2ae6b06876205f2209e4504110fe4115b37540c21ecfbbc0ebc11084cb779  Rocky-8.5-x86_64-minimal.iso

The original command:

sha256sum -c CHECKSUM --ignore-missing  Rocky-8.5-x86_64-minimal.iso
sha256sum: CHECKSUM: No such file or directory
sha256sum: Rocky-8.5-x86_64-minimal.iso: no properly formatted SHA256 checksum lines found

[sspencerwire]

@alansill please comment back... I'll hold this open until you respond. Thanks!

[alansill]

It works if you just leave off the iso name:

sha256sum -c CHECKSUM --ignore-missing

[sspencerwire]

It works if you just leave off the iso name:

sha256sum -c CHECKSUM --ignore-missing

It works if you just leave off the iso name:

sha256sum -c CHECKSUM --ignore-missing

Well, it may... but not for me!

sha256sum -c CHECKSUM --ignore-missing
sha256sum: CHECKSUM: No such file or directory

[sspencerwire]

This works however:

sha256sum Rocky-8.5-x86_64-minimal.iso 
4eb2ae6b06876205f2209e4504110fe4115b37540c21ecfbbc0ebc11084cb779  Rocky-8.5-x86_64-minimal.iso

[sspencerwire]

Actually, I was taking this all out of context... that's my fault for not first looking at the document in its entirety. Once the checksum is downloaded the original command returns:

sha256sum -c CHECKSUM --ignore-missing Rocky-8.5-x86_64-minimal.iso 
Rocky-8.5-x86_64-dvd1.iso: OK
Rocky-8.5-x86_64-minimal.iso: OK
sha256sum: Rocky-8.5-x86_64-minimal.iso: no properly formatted SHA256 checksum lines found

Which still returns that annoying last line after properly checking the checksum.

[alansill]

I think if you leave the iso file name off of the command it will check everything it can find as listed in the CHECKSUM file, so no need to include the file name.

[alansill]

This works however:

sha256sum Rocky-8.5-x86_64-minimal.iso 
4eb2ae6b06876205f2209e4504110fe4115b37540c21ecfbbc0ebc11084cb779  Rocky-8.5-x86_64-minimal.iso

Do you have both the CHECKSUM file and the ISO file in the directory from which you issued the command? It works for me without the file name as I mentioned above if both files are present in the same directory.

[alansill]

In other words, this works for me:

v="8.5"; wget https://download.rockylinux.org/pub/rocky/$v/isos/x86_64/Rocky-$v-x86_64-minimal.iso; wget https://download.rockylinux.org/pub/rocky/$v/isos/x86_64/CHECKSUM; sha256sum -c CHECKSUM --ignore-missing

[alansill]

Closed and replaced by #664