[NTLUG:Discuss] iso md5sum question

[Fred James]

./aal wrote:
> On Sat, Nov 8, 2008 at 4:43 PM, Wayne Walker <wwalker at bybent.com> wrote:
>   
>> On Sat, Nov 08, 2008 at 04:21:16PM -0600, Fred James wrote:
>>     
>>> All
>>> I downloaded ubcd411.zip, unzip'd it to ubcd411.iso and ran md5sum
>>> against it ...
>>>     md5sum ubcd411.iso returned a number identical to the one posted on
>>> the web site
>>>     md4sum --check ubcd411.iso returned this message ...
>>>       
>> md5sum --check MD5SUM
>>
>> --check takes an argument of a file fulle of md5sum output lines to match,
>> not the name of a file to test.
>>
>>     
>>> "md5sum: ubcd411.iso: no properly formatted MD5 checksum lines found"
>>>
>>> What am I looking at?  Thank you in advance for any help you may be able
>>> to offer
>>> Regards
>>> Fred James
>>>       
>
> there should be 2 files on the site you get your iso from
> file.iso               the disk image to burn
>
> file.md5sum      a text file containing info for md5sum to use
> or
> file.DIGEST(S)
>
>
> here is what to do with them
>
> put the iso and the md5sum/DIGEST file in the same directory
> run this command to check
> md5sum -c file.md5sum  (or file.DIGEST depending on what you have)
>
> then you will get a simple pass/fail output
>
>
> and
> read the manpage for md5sum
>
>
>
> hope that helps
> ./aal
>   
./aal
So the problem is that the download site provided an md5 number, not a 
file?  Actually, the md5sum files that I have seen contain (on one line) 
the md5 number and the iso filename - so I put the number provided into 
a file followed by the iso filename, but md5sum -c returns the same 
error as before.  Should I trust the file since the check sums are the 
same, or is md5sum -c telling me otherwise?  Thank you in advance for 
any help you may be able to offer
Regards
Fred James