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/>
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Copyright ©
2023 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'