123 lines
3 KiB
Groff
123 lines
3 KiB
Groff
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.50.1.
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.TH CKSUM "1" "April 2025" "GNU coreutils 9.7" "User Commands"
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.SH NAME
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cksum \- compute and verify file checksums
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.SH SYNOPSIS
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.B cksum
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[\fI\,OPTION\/\fR]... [\fI\,FILE\/\fR]...
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.SH DESCRIPTION
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.\" Add any additional description here
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.PP
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Print or verify checksums.
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By default use the 32 bit CRC algorithm.
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.PP
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With no FILE, or when FILE is \-, read standard input.
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.PP
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Mandatory arguments to long options are mandatory for short options too.
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.TP
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\fB\-a\fR, \fB\-\-algorithm\fR=\fI\,TYPE\/\fR
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select the digest type to use. See DIGEST below
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.TP
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\fB\-\-base64\fR
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emit base64\-encoded digests, not hexadecimal
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.TP
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\fB\-c\fR, \fB\-\-check\fR
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read checksums from the FILEs and check them
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.TP
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\fB\-l\fR, \fB\-\-length\fR=\fI\,BITS\/\fR
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digest length in bits; must not exceed the max for
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the blake2 algorithm and must be a multiple of 8
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.TP
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\fB\-\-raw\fR
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emit a raw binary digest, not hexadecimal
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.TP
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\fB\-\-tag\fR
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create a BSD\-style checksum (the default)
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.TP
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\fB\-\-untagged\fR
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create a reversed style checksum, without digest type
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.TP
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\fB\-z\fR, \fB\-\-zero\fR
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end each output line with NUL, not newline,
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and disable file name escaping
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.SS "The following five options are useful only when verifying checksums:"
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.TP
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\fB\-\-ignore\-missing\fR
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don't fail or report status for missing files
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.TP
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\fB\-\-quiet\fR
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don't print OK for each successfully verified file
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.TP
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\fB\-\-status\fR
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don't output anything, status code shows success
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.TP
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\fB\-\-strict\fR
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exit non\-zero for improperly formatted checksum lines
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.TP
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\fB\-w\fR, \fB\-\-warn\fR
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warn about improperly formatted checksum lines
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.TP
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\fB\-\-debug\fR
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indicate which implementation used
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.TP
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\fB\-\-help\fR
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display this help and exit
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.TP
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\fB\-\-version\fR
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output version information and exit
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.SS "DIGEST determines the digest algorithm and default output format:"
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.TP
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sysv
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(equivalent to sum \fB\-s\fR)
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.TP
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bsd
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(equivalent to sum \fB\-r\fR)
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.TP
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crc
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(equivalent to cksum)
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.TP
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crc32b
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(only available through cksum)
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.TP
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md5
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(equivalent to md5sum)
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.TP
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sha1
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(equivalent to sha1sum)
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.TP
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sha224
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(equivalent to sha224sum)
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.TP
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sha256
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(equivalent to sha256sum)
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.TP
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sha384
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(equivalent to sha384sum)
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.TP
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sha512
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(equivalent to sha512sum)
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.TP
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blake2b
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(equivalent to b2sum)
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.TP
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sm3
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(only available through cksum)
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.PP
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When checking, the input should be a former output of this program,
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or equivalent standalone program.
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.SH AUTHOR
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Written by Padraig Brady and Q. Frank Xia.
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.SH "REPORTING BUGS"
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GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
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.br
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Report any translation bugs to <https://translationproject.org/team/>
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.SH COPYRIGHT
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Copyright \(co 2025 Free Software Foundation, Inc.
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License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
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.br
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law.
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.SH "SEE ALSO"
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Full documentation <https://www.gnu.org/software/coreutils/cksum>
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.br
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or available locally via: info \(aq(coreutils) cksum invocation\(aq
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