[ale] How to check files on CDROM?

[Christopher Fowler]

Will convert fail on bad data?  

foreach $file in /mnt/cdrom
do
  convert $file /tmp/1.png
  rm /tmp/1.png
done

Just a guess since it tries to read the data to convert it.

Maybe if it succeeds then you could start and md5sum catalog then.


On Thu, 2007-02-15 at 13:52 -0500, Thompson Freeman wrote:
> 
> This may be a bit of an oddball question when I get to it.
> 
> I just spent an hour backing up my girlfriend's pictures on  
> her computer, roughly 5 CD's worth. Since CD's can slowly  
> go bad, I got wondering is there a reasonable way to let a  
> computer verify each file?  In this case jpegs but make it  
> a general case.
> 
> Obviously, if I had planned it properly each file could be  
> run through a checksum procedure _before_ burning the disk.  
> As it is now, I need to open each file individually and  
> look at it. This can be automated to a degree, but I still  
> need to eyeball each one to verify that the picture is  
> complete and still there on the disk. Since there should be  
> better than 10,000 pictures, that represents a fair chunk  
> of time I'd prefer to use goofing off some other way.
> 
> Thanks for any ideas, and I appreciate the use of  
> everybody's bandwidth.
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