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 MD5 sums from the FILEs and check them
|
−−tag |
create a BSD−style checksum |
−t, −−text
read in text mode (default)
Note: There is no difference between binary and text mode option on GNU system.
The
following four options are useful only when verifying
checksums:
−−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 character indicating input mode (’*’ for binary, space for text), and name for each FILE.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report md5sum translation bugs to <http://translationproject.org/team/>
The MD5 algorithm should not be used any more for security related purposes. Instead, better use an SHA−2 algorithm, implemented in the programs sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1)
Written by Ulrich Drepper, Scott Miller, and David Madore.
Copyright
© 2013 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later
<http://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.
The full documentation for md5sum is maintained as a Texinfo manual. If the info and md5sum programs are properly installed at your site, the command
info coreutils 'md5sum invocation'
should give you access to the complete manual.
Created: Sunday October 8, 2017