cubehash — checksum utility
cubehash filename(s)
cubehash prints the CubeHash content hash values of each named.
filename
The output format is modelled on that of sha256(1).
cubehash tries not to hash the same file multiple times.
If the same filename argument is supplied multiple times, or if by comparing device and i-node numbers it transpires that cubehash has already hashed the file, it prints out the prior hash value without re‐reading the file.