What is md5sum??? Post: 7366

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md5sum

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)

	      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/>

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.

COPYRIGHT

       Copyright (C) 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.

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.

GNU coreutils 8.22						     June 2014								 MD5SUM(1)

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