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Updated: July 2017
 
 

md5sum (1)

Name

md5sum - compute and check MD5 message digest

Synopsis

md5sum [OPTION]... [FILE]...

Description

MD5SUM(1)                        User Commands                       MD5SUM(1)



NAME
       md5sum - compute and check MD5 message digest

SYNOPSIS
       md5sum [OPTION]... [FILE]...

DESCRIPTION
       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

       -t, --text
              read in text mode (default)

   The following three 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

       -w, --warn
              warn about improperly formatted checksum lines

       --strict
              with --check, exit non-zero for any invalid input

       --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.

BUGS
       The MD5 algorithm should not be used any more for security related pur-
       poses.  Instead, better use an SHA-2 algorithm, implemented in the pro-
       grams sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1)

AUTHOR
       Written by Ulrich Drepper, Scott Miller, and David Madore.

REPORTING BUGS
       Report md5sum bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report md5sum translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright  (C) 2012 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.


ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:


       +---------------+--------------------+
       |ATTRIBUTE TYPE |  ATTRIBUTE VALUE   |
       +---------------+--------------------+
       |Availability   | file/gnu-coreutils |
       +---------------+--------------------+
       |Stability      | Uncommitted        |
       +---------------+--------------------+
SEE ALSO
       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.



NOTES
       This     software     was    built    from    source    available    at
       https://java.net/projects/solaris-userland.   The  original   community
       source   was  downloaded  from   http://ftp.gnu.org/gnu/coreutils/core-
       utils-8.16.tar.xz

       Further information about this software can be found on the open source
       community website at http://www.gnu.org/software/coreutils/.



GNU coreutils 8.16                March 2012                         MD5SUM(1)