Re: How do you use md5sum?

From: faeychild (phobos_at_deimos.com)
Date: 04/30/05 

Date: Sat, 30 Apr 2005 09:42:03 +1000

Unruh wrote:

> Ohmster <notareal@emailaddress.com> writes:
>
>>How do I check that these are indeed "official" FC3 image files and are
>>the same as those offered by the linuxiso website? Running md5sum like
>>this:
>
>>[ohmster@ohmster FC3]$ md5sum FC3-i386-disc1.iso
>>db8c7254beeb4f6b891d1ed3f689b412 FC3-i386-disc1.iso
>>[ohmster@ohmster FC3]$
>
>>Gives me this huge number that I could check against the md5sum number
>>on the linuxiso website or ever on the alternate download site, but that
>
> Good. You have got it.
> Now why would that leave lots of room for human error. Any change in the
> files is likely to cause half of the bits in the md5sum to change. Ie,
> each character remaining the same has about a 1/16 chance. 5 given
His point is - comparing the output of md5sum with the actual checksum
number, by eye, is error prone.
There may be some way to pipe the output of md5sum through a compare
function, but I don't know it. Surely a script wouldn't be too difficult
to knock up.
Then again, compairing checksums is not something I do too frequently. 

-- 
faeychild

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