| CKSUM(1) | General Commands Manual | CKSUM(1) |
NAME¶
cksum - Print CRC and size for each file
SYNOPSIS¶
cksum [-a|--algorithm] [--untagged] [--tag] [-l|--length] [--raw] [-c|--check] [-w|--warn] [--status] [--quiet] [--ignore-missing] [--strict] [--base64] [-z|--zero] [--debug] [-h|--help] [-V|--version] [file]
DESCRIPTION¶
Print CRC and size for each file
OPTIONS¶
- -a, --algorithm <ALGORITHM>
- select the digest type to use. See DIGEST below
Possible values:
- sysv
- bsd
- crc
- crc32b
- md5
- sha1
- sha2
- sha3
- blake2b
- sm3
- sha224
- sha256
- sha384
- sha512
- blake3
- shake128
- shake256
- --untagged
- create a reversed style checksum, without digest type
- --tag
- create a BSD style checksum (default)
- -l, --length
- 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
- --raw
- emit a raw binary digest, not hexadecimal
- -c, --check
- read checksums from the FILEs and check them
- -w, --warn
- warn about improperly formatted checksum lines
- --status
- don't output anything, status code shows success
- --quiet
- don't print OK for each successfully verified file
- --ignore-missing
- don't fail or report status for missing files
- --strict
- exit non-zero for improperly formatted checksum lines
- --base64
- emit base64-encoded digests, not hexadecimal
- -z, --zero
- end each output line with NUL, not newline, and disable file name escaping
- --debug
- print CPU hardware capability detection info used by cksum
- -h, --help
- Print help
- -V, --version
- Print version
EXTRA¶
DIGEST determines the digest algorithm and default output format:
- sysv: (equivalent to sum -s) - bsd: (equivalent to sum -r) - crc: (equivalent to cksum) - crc32b: (only available through cksum) - md5: (equivalent to md5sum) - sha1: (equivalent to sha1sum) - sha2: (equivalent to sha{224,256,384,512}sum) - sha3: (only available through cksum) - blake2b: (equivalent to b2sum) - sm3: (only available through cksum)
VERSION¶
v(uutils coreutils) 0.8.0
EXAMPLES¶
Display a 32-bit checksum, size in bytes and filename:
cksum path/to/file
The examples are provided by the tldr-pages project <https://tldr.sh> under the CC BY 4.0 License. Please note that, as uutils is a work in progress, some examples might fail.
| 2026-05-17 |