hash - Calculate file hashes
gsutil hash [-c] [-h] [-m] filename...
The hash command calculates hashes on a local file that can be used to compare with gsutil ls -L output. If a specific hash option is not provided, this command calculates all gsutil-supported hashes for the file.
Note that gsutil automatically performs hash validation when uploading or downloading files, so this command is only needed if you want to write a script that separately checks the hash for some reason.
If you calculate a CRC32c hash for the file without a precompiled crcmod installation, hashing will be very slow. See gsutil help crcmod for details.
|-c||Calculate a CRC32c hash for the file.|
|-h||Output hashes in hex format. By default, gsutil uses base64.|
|-m||Calculate a MD5 hash for the file.|