CKSUM(1) General Commands Manual CKSUM(1) (NAME) cksum - CRC (SYNOPSIS) cksum [OPTIONS] [FILE]... (DESCRIPTION) CRC (OPTIONS) -a, --algorithm (digest) . DIGEST : o sysv o bsd o crc o crc32b o md5 o sha1 o sha2 o sha3 o blake2b o sm3 o sha224 o sha256 o sha384 o sha512 o blake3 o shake128 o shake256 --untagged --tag BSD () -l, --length blake2b sha2 sha3 --raw (hexadecimal) -c, --check FILE -w, --warn --status --quiet OK --ignore-missing --strict --base64 base64 -z, --zero NUL (escaping) --debug (CPU) cksum -h, --help -V, --version (EXTRA) DIGEST : - sysv: sum -s - bsd: sum -r - crc: cksum - crc32b: cksum - md5: md5sum - sha1: sha1sum - sha2: sha{224,256,384,512}sum - sha3: cksum - blake2b: b2sum - sm3: cksum (VERSION) v(uutils coreutils) 0.11.0 2026-09-01 CKSUM(1)