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.TH CKSUM 1 "2026-09-01"
.SH NAME
cksum \- Print CRC and size for each file
.SH SYNOPSIS
\fBcksum\fR [OPTIONS] [FILE]...
.SH DESCRIPTION
Print CRC and size for each file
.SH OPTIONS
.TP
\fB\-a\fR, \fB\-\-algorithm\fR \fI<ALGORITHM>\fR
select the digest type to use. See DIGEST below

\fIPossible values:\fR
.RS 14
.IP \(bu 2
sysv
.IP \(bu 2
bsd
.IP \(bu 2
crc
.IP \(bu 2
crc32b
.IP \(bu 2
md5
.IP \(bu 2
sha1
.IP \(bu 2
sha2
.IP \(bu 2
sha3
.IP \(bu 2
blake2b
.IP \(bu 2
sm3
.IP \(bu 2
sha224
.IP \(bu 2
sha256
.IP \(bu 2
sha384
.IP \(bu 2
sha512
.IP \(bu 2
blake3
.IP \(bu 2
shake128
.IP \(bu 2
shake256
.RE
.TP
\fB\-\-untagged\fR
create a reversed style checksum, without digest type
.TP
\fB\-\-tag\fR
create a BSD style checksum (default)
.TP
\fB\-l\fR, \fB\-\-length\fR
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
.TP
\fB\-\-raw\fR
emit a raw binary digest, not hexadecimal
.TP
\fB\-c\fR, \fB\-\-check\fR
read checksums from the FILEs and check them
.TP
\fB\-w\fR, \fB\-\-warn\fR
warn about improperly formatted checksum lines
.TP
\fB\-\-status\fR
don\*(Aqt output anything, status code shows success
.TP
\fB\-\-quiet\fR
don\*(Aqt print OK for each successfully verified file
.TP
\fB\-\-ignore\-missing\fR
don\*(Aqt fail or report status for missing files
.TP
\fB\-\-strict\fR
exit non\-zero for improperly formatted checksum lines
.TP
\fB\-\-base64\fR
emit base64\-encoded digests, not hexadecimal
.TP
\fB\-z\fR, \fB\-\-zero\fR
end each output line with NUL, not newline, and disable file name escaping
.TP
\fB\-\-debug\fR
print CPU hardware capability detection info used by cksum
.TP
\fB\-h\fR, \fB\-\-help\fR
Print help
.TP
\fB\-V\fR, \fB\-\-version\fR
Print version
.SH 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
.SH VERSION
v(uutils coreutils) 0.11.0