b2sum: Print or check BLAKE2 digests ¶b2sum computes a 512-bit checksum for each specified
file.
If a file is specified as ‘-’ or if no files are given
b2sum computes the checksum for the standard input.
b2sum can also determine whether a file and checksum are
consistent. Synopsis:
b2sum [option]... [file]...
b2sum uses the ‘Untagged output format’
for each specified file, as described at cksum output modes.
The program accepts cksum common options. Also see Common options.
In addition b2sum supports the following options.
Specify the digest size used by the algorithm. This option is optional. By default a 512 bit digest will be used. If the option is given it must be a multiple of 8.
This option is ignored when --check is specified, as the length is automatically determined when checking.