B2SUM(1) B2SUM(1) b2sum - compute and check BLAKE2 message digest b2sum []... []... Print or check BLAKE2b (512-bit) checksums. Legacy interface to the cksum utility. , -, . . -b, --binary -c, --check -l, --length=BITS digest length in bits; must not exceed the max size and must be a multiple of 8 for blake2b; must be 224, 256, 384, or 512 for sha2 or sha3 --tag -t, --text () -z, --zero , : --ignore-missing --quiet --status , --strict - -w, --warn --help --version The sums are computed as described in RFC 7693. When checking, the input should be a former output of this program. The default mode is to print a line with: checksum, a space, a character indicating input mode ('*' for binary, ' ' for text or where binary is insignificant), and name for each FILE. . . : bug-coreutils@gnu.org coreutils : : Copyright (C) 2026 Free Software Foundation, Inc. 3+: 3 . : . , . cksum(1) ,,info '(coreutils) b2sum invocation'" ; 3 . . , - TODO <>. coreutils 9.11 2026 B2SUM(1)