md5sum - compute and check MD5 message digest
md5sum [
OPTION]... [
FILE]...
Print or check MD5 (128-bit) checksums.
With no FILE, or when FILE is -, read standard input.
-
-b, --binary
- read in binary mode
-
-c, --check
- read checksums from the FILEs and check them
- --tag
- create a BSD-style checksum
-
-t, --text
- read in text mode (default)
-
-z, --zero
- end each output line with NUL, not newline, and disable
file name escaping
- --ignore-missing
- don't fail or report status for missing files
- --quiet
- don't print OK for each successfully verified file
- --status
- don't output anything, status code shows success
- --strict
- exit non-zero for improperly formatted checksum lines
-
-w, --warn
- warn about improperly formatted checksum lines
- --help
- display this help and exit
- --version
- output version information and exit
The sums are computed as described in RFC 1321. When checking, the input should
be a former output of this program. The default mode is to print a line with:
checksum, a space, a character indicating input mode ('*' for binary, ' ' for
text or where binary is insignificant), and name for each FILE.
Note: There is no difference between binary mode and text mode on GNU systems.
Do not use the MD5 algorithm for security related purposes. Instead, use an
SHA-2 algorithm, implemented in the programs
sha224sum(1),
sha256sum(1),
sha384sum(1),
sha512sum(1), or the BLAKE2
algorithm, implemented in
b2sum(1)
Written by Ulrich Drepper, Scott Miller, and David Madore.
GNU coreutils online help: <
https://www.gnu.org/software/coreutils/>
Report any translation bugs to <
https://translationproject.org/team/>
Copyright © 2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL
version 3 or later <
https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO
WARRANTY, to the extent permitted by law.
cksum(1)
Full documentation <
https://www.gnu.org/software/coreutils/md5sum>
or available locally via: info '(coreutils) md5sum invocation'