[ale] How to check files on CDROM?

[Tom Freeman]

I'm not exactly sure, but "convert" looks to be useable. At least it  
fails on a zero length file. I'll need to fiddle around a little bit  
later to discover if it will fail on a corrupted file. It's a start at  
least.

Thanks for the idea. I'll see where it leads

On 02/15/2007 04:44:37 PM, Christopher Fowler wrote:
> 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.
> > _______________________________________________
> > Ale mailing list
> > Ale at ale.org
> > http://www.ale.org/mailman/listinfo/ale
> 
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