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 five options are useful only when verifying checksums:
   --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.

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    2016  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'

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