[lug] Testing CDs and ISO Images

Jeffrey Siegal jbs at quiotix.com
Mon Jun 10 15:41:18 MDT 2002

Dhruva B. Reddy wrote:
> Thanks!  I'll have to give this a try.  FYI, this doesn't work for
> filenames with spaces (e.g., most of my mp3 collection).  The following
> does, though:
> 	find . -type f -exec md5sum {} \; | sort > /tmp/cmpfile

find . -type f -print0 | xargs -0 md5sum | sort >/tmp/cmpfile

> Dhruva
> On Mon, Jun 10, 2002 at 03:10:09PM -0600, quoth Sean Reifschneider:
>>On Mon, Jun 10, 2002 at 07:21:42AM -0600, Dhruva B. Reddy wrote:
>>>I recently burned a data CD and some of the files did not make it on
>>>there in their entirety, which I did not find out until after I had
>>>deleted the ISO image and original files from my hard drive (^%&*(%).
>>Ugh.  I feel your pain...
>>I usually do a:
>>   find . -type f | xargs md5sum | sort >/tmp/cmpfile
>>on both the source directory and the destination ISO.  If they're
>>different, there is a problem...  This doesn't catch a lot of more marginal
>>discs.  That shouldn't be as much of a problem if you're reading the discs
>>on the same drive that's burning them...
>>For KRUD, I developed a custom CD tester which is pretty picky about what
>>it considers a good disc.  This is important because we're burning discs
>>for someone else to use...  Sometimes discs are burned that our drives,
>>after some work, can read, but that somone with an older drive cannot...
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