Bug 1282228

Summary:	Problems Verifying Checksums on both Mac OS X and Ubuntu Linux
Product:	[Retired] Fedora Documentation	Reporter:	Adam Stewart <ajstewart426>
Component:	install-guide	Assignee:	Petr Bokoc <pbokoc>
Status:	CLOSED EOL	QA Contact:	Fedora Docs QA <docs-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	devel	CC:	fredy, pbokoc, zach
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Mac OS
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2024-05-21 09:21:52 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Adam Stewart 2015-11-15 17:07:02 UTC

Description of problem:

shasum and sha256 sum do not like the format of your checksum files for some reason.

Version-Release number of selected component (if applicable):

Fedora-Live-Workstation-x86_64-23-10.iso
Fedora-Workstation-23-x86_64-CHECKSUM

How reproducible:

Follow the instructions in section 3.3.2

Steps to Reproduce:
1. Download the Fedora image and appropriate checksum file. I was using the versions listed above. I tried both saving the checksum webpage itself and copying and pasting the text into a txt file.
2. In a terminal, navigate to the directory containing the files
3. For Linux:
$ sha256sum -c *CHECKSUM
For OS X:
$ shasum -a 256 -c *CHECKSUM

Actual results:

When running the above commands on both OS X and Ubuntu, I get something along the lines of the following:
shasum: Fedora-Workstation-23-x86_64-CHECKSUM: no properly formatted SHA1 checksum lines found
For some reason it does not like the formatting of your files.

Expected results:

Something saying the checksum is valid I assume.

Additional info:

When I remove the -c option, it spits out the checksum itself. I was able to manually verify the download that way. This solution should be sufficient for most users. At least, it's better than having them run into the above error message. A better solution would involve figuring out why it doesn't like the formatting. I tried switching the line-ending characters from \n to \r\n since that's such a common problem but it didn't help. If you want any more detailed information on how to recreate this bug just let me know.

Comment 1 Fredy Muñoz 2015-11-27 01:51:38 UTC

The format of the `*-CHECKSUM` file is not recognized by `shasum` in Mac OS X. I solved this using the following one-liner in OS X Yosemite:

$ grep '^SHA256' *-CHECKSUM | awk -F '[()=]' '{ print $4 "  " $2 }' | shasum -a 256 -c

I also posted this solution at: https://ask.fedoraproject.org/en/question/74873/cant-verify-the-image-checksum-fedora-22/?answer=78954#post-id-78954

Comment 2 Petr Bokoc 2024-05-21 09:21:52 UTC

The install guide has been retired, therefore I'm closing this bug. 

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