1 .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.47.3.
2 .TH MD5SUM "1" "March 2020" "GNU coreutils 8.32" "User Commands"
4 md5sum \- compute and check MD5 message digest
7 [\fI\,OPTION\/\fR]... [\fI\,FILE\/\fR]...
9 .\" Add any additional description here
11 Print or check MD5 (128\-bit) checksums.
13 With no FILE, or when FILE is \-, read standard input.
15 \fB\-b\fR, \fB\-\-binary\fR
18 \fB\-c\fR, \fB\-\-check\fR
19 read MD5 sums from the FILEs and check them
22 create a BSD\-style checksum
24 \fB\-t\fR, \fB\-\-text\fR
25 read in text mode (default)
27 \fB\-z\fR, \fB\-\-zero\fR
28 end each output line with NUL, not newline,
29 and disable file name escaping
30 .SS "The following five options are useful only when verifying checksums:"
32 \fB\-\-ignore\-missing\fR
33 don't fail or report status for missing files
36 don't print OK for each successfully verified file
39 don't output anything, status code shows success
42 exit non\-zero for improperly formatted checksum lines
44 \fB\-w\fR, \fB\-\-warn\fR
45 warn about improperly formatted checksum lines
48 display this help and exit
51 output version information and exit
53 The sums are computed as described in RFC 1321. When checking, the input
54 should be a former output of this program. The default mode is to print a
55 line with checksum, a space, a character indicating input mode ('*' for binary,
56 \&' ' for text or where binary is insignificant), and name for each FILE.
58 Note: There is no difference between binary mode and text mode on GNU systems.
60 Do not use the MD5 algorithm for security related purposes.
61 Instead, use an SHA\-2 algorithm, implemented in the programs
62 sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1),
63 or the BLAKE2 algorithm, implemented in b2sum(1)
65 Written by Ulrich Drepper, Scott Miller, and David Madore.
67 GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
69 Report any translation bugs to <https://translationproject.org/team/>
71 Copyright \(co 2020 Free Software Foundation, Inc.
72 License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
74 This is free software: you are free to change and redistribute it.
75 There is NO WARRANTY, to the extent permitted by law.
77 Full documentation <https://www.gnu.org/software/coreutils/md5sum>
79 or available locally via: info \(aq(coreutils) md5sum invocation\(aq