Usage of whirlpoolsum:
whirlpoolsum [-c <hash.ext>] [-r] <file.ext>
  -c string
        Check hashsum file.
  -r    Process directories recursively.

$ ./whirlpoolsum [-r] "*.*" > hash.txt

$ ./whirlpoolsum -c hash.txt
$ echo $?

This project is licensed under the ISC License.