.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.50.1.
.TH MD5SUM "1" "October 2026" "GNU coreutils 9.12" "User Commands"
.SH NAME
md5sum \- compute and check MD5 message digest
.SH SYNOPSIS
.B md5sum
[\fI\,OPTION\/\fR]... [\fI\,FILE\/\fR]...
.SH DESCRIPTION
.\" Add any additional description here
.PP
Print or check MD5 checksums.
Legacy interface to the \fBcksum\fP(1) utility.
.PP
With no FILE, or when FILE is \-, read standard input.
.PP
Mandatory arguments to long options are mandatory for short options too.
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-b'\fB\-b, \-\-binary\fP\X'tty: link'
read in binary mode
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-c'\fB\-c, \-\-check\fP\X'tty: link'
read checksums from the FILEs and check them
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--tag'\fB\-\-tag\fP\X'tty: link'
create a BSD\-style checksum
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-t'\fB\-t, \-\-text\fP\X'tty: link'
read in text mode (default)
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-z'\fB\-z, \-\-zero\fP\X'tty: link'
end each output line with NUL, not newline,
and disable file name escaping
.SS "The following five options are useful only when verifying checksums:"
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--ignore-missing'\fB\-\-ignore\-missing\fP\X'tty: link'
don't fail or report status for missing files
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--quiet'\fB\-\-quiet\fP\X'tty: link'
don't print OK for each successfully verified file
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--status'\fB\-\-status\fP\X'tty: link'
don't output anything, status code shows success
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum--strict'\fB\-\-strict\fP\X'tty: link'
exit non\-zero for improperly formatted checksum lines
.TP
\X'tty: link https://www.gnu.org/software/coreutils/manual/coreutils.html#cksum-w'\fB\-w, \-\-warn\fP\X'tty: link'
warn about improperly formatted checksum lines
.TP
\X'tty: link https://www.gnu.org/software/coreutils/cksum#cksum--help'\fB\-\-help\fP\X'tty: link'
display this help and exit
.TP
\X'tty: link https://www.gnu.org/software/coreutils/cksum#cksum--version'\fB\-\-version\fP\X'tty: link'
output version information and exit
.PP
When checking, the input should be a former output of this program,
or equivalent standalone program.
.SH BUGS
Do not use the MD5 algorithm for security related purposes.
Instead, use an SHA\-2, SHA\-3, or BLAKE2 algorithm,
implemented in the \fBcksum\fP(1) program.
.SH AUTHOR
Written by Padraig Brady and Q. Frank Xia.
.SH "REPORTING BUGS"
Report bugs to: <bug\-coreutils@gnu.org>.
.br
Report any translation bugs to: <https://translationproject.org/team/>.
.br
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
.br
General help using GNU software: <https://www.gnu.org/gethelp/>
.SH COPYRIGHT
Copyright \(co 2026 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
\fBcksum\fP(1)
.PP
.br
Full documentation <https://www.gnu.org/software/coreutils/md5sum>
.br
or available locally via: info \(aq(coreutils) md5sum invocation\(aq