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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

       --tag  create a BSD-style checksum

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

   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 for‐
       mer  output of this program.  The default mode is to print a line with checksum, a charac‐
       ter 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  purposes.   Instead,
       better  use  an  SHA-2  algorithm, implemented in the programs sha224sum(1), sha256sum(1),
       sha384sum(1), sha512sum(1)

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

REPORTING BUGS
       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report md5sum translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright © 2014 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.

SEE ALSO
       Full documentation at: <http://www.gnu.org/software/coreutils/md5sum>
       or available locally via: info '(coreutils) md5sum invocation'



GNU coreutils 8.23                          March 2015                                  MD5SUM(1)


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