find . -type f -exec \
bash -c 'md5sum "$0" | grep -q b2a490745fe5fe8a41c0d1040faff507 && echo $0' {} \;
https://superuser.com/questions/653185/finding-a-file-by-md5sum
find . -type f -exec \
bash -c 'md5sum "$0" | grep -q b2a490745fe5fe8a41c0d1040faff507 && echo $0' {} \;
https://superuser.com/questions/653185/finding-a-file-by-md5sum