Thanks.
I ran these commands, and I'm up to the final step of using those hash 
values to look up all the matching filenames in the original md5 file.
I'm researching a command for that, as command fdupes seems to be for 
files, but I need to match up the md5 hash values?
ubuntu@ubuntu:~/Documents$ find -H test1/ ! -type d -exec md5sum {} + > 
sum.md5
ubuntu@ubuntu:~/Documents$ ls
NoMachine  sum.md5  test1  test2
ubuntu@ubuntu:~/Documents$ cat sum.md5 
3bc3be114fb6323adc5b0ad7422d193a  test1/test1.1/test1.1.1/test1.1.1file2.JPG
126a8a51b9d1bbd07fddc65819a542c3 
 test1/test1.1/test1.1.1/test1.1.1file1.JPG.json
3e7705498e8be60520841409ebc69bc1  test1/test1.1/test1.1.1/test1.1.1file1.JPG
d8e8fca2dc0f896fd7cb4cb0031ba249 
 test1/test2/test2.2/test2.2.2/test2.2.2file1.JPG
126a8a51b9d1bbd07fddc65819a542c3 
 test1/test2/test2.2/test2.2.2/test1.1.1file1.JPG.json
d8e8fca2dc0f896fd7cb4cb0031ba249 
 test1/test2/test2.2/test2.2.2/test2.2.2file1.JPG.json
ubuntu@ubuntu:~/Documents$ sort|uniq -c|sort -nr sum.md5 |cut -d ' ' -f1
126a8a51b9d1bbd07fddc65819a542c3
126a8a51b9d1bbd07fddc65819a542c3
3e7705498e8be60520841409ebc69bc1
3bc3be114fb6323adc5b0ad7422d193a
d8e8fca2dc0f896fd7cb4cb0031ba249
d8e8fca2dc0f896fd7cb4cb0031ba249

On Friday 5 January 2024 at 01:14:24 UTC+10 jr wrote:

> hi,
>
> On Thu, 4 Jan 2024 at 13:11, K otgc <[email protected]> wrote:
> > Diff worked, similar to Meld, with a clear list of what files (photos) 
> are in or not in directories.
> > I'm stuck on the command to extract just the md5 values?
> > Directory with photo files -> find -H directoryName/ ! -type d -exec 
> md5sum {} + >sum.md5 -> select Enter -> sort | uniq -c | sort -nr 
> checksum’sFileName.md5 -> select Enter -> not sure how to extract just the 
> md5 values?
> >
> > ubuntu@ubuntu:~/Documents$ cat sum2.md5
> > 3bc3be114fb6323adc5b0ad7422d193a 
> test1/test1.1/test1.1.1/test1.1.1file2.JPG
>
> the command you're looking for is 'cut(1)', eg '$ cat sum2.md5 | cut -d' ' 
> -f1'.
>
> -- 
> regards, jr.
>
> You have the right to free speech, as long as you're not dumb enough
> to actually try it.
> (The Clash 'Know Your Rights')
>
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