Provided by: coreutils_8.21-1ubuntu5_amd64 bug


       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

       -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 three options are useful only when verifying checksums:
              don't print OK for each successfully verified file

              don't output anything, status code shows success

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

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

       --help display this help and exit

              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.


       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.


       Report md5sum bugs to
       GNU coreutils home page: <>
       General help using GNU software: <>
       Report md5sum translation bugs to <>


       Copyright © 2013 Free Software Foundation, Inc.  License GPLv3+:  GNU  GPL  version  3  or
       later <>.
       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.