b2sum invocation (GNU Coreutils 9.0)
6.4 b2sum: Print or check BLAKE2 digests
b2sum computes a 512-bit checksum for each specified
file. The same usage and options as the
md5sum command are supported. See md5sum invocation. In addition
b2sum supports the following options.
Change (shorten) the default digest length. This is specified in bits and thus must be a multiple of 8. This option is ignored when
--checkis specified, as the length is automatically determined when checking.