P
Peter Judge
Guest
It's easy enough to calculate a digest (look at the MESSAGE-DIGEST function) but finding the file from that hash will be harder, since digests are one-way (ie you will need to read all the files in the directory until you find the one with a matching digest). You could mitigate this by using a TT to store the digests and their file names, but - you have to do it in each session - the cache of digests will get stale, probably quite quickly: new files, deleted files, renamed files will all affect that cache. You will also need to think about which directory to look in … it looks like there's some structore already "332" and "2020" .
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