Introduction
Use this md5sum recipe to confirm the that two directories are exactly the same.
Usage
Verify directory copy by md5 summing each file and then creating a single md5sum from the list.
find -s "source directory" -type f | xargs -I{} md5sum {} > source.md5.txt
find -s "target directory" -type f | xargs -I{} md5sum {} > target.md5.txt
diff source.md5.txt target.md5.txt
This below from cnet does not work. It returns the error "find: md5sum: No such file or directory",
find -s "source directory" -type f -exec md5sum {} \; | md5sum > source.md5.txt
find -s "target directory" -type f -exec md5sum {} \; | md5sum > target.md5.txt
diff source.md5.txt target.md5.txt
Note this script can be improved to detect failed directory listing.
References
md5 entire folder - http://www.cnet.com/news/how-to-manually-verify-copied-files-in-os-x/