MD5SUM(1)                         User Commands                        MD5SUM(1)

       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 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:
              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 type (`*' for  binary,  `  '
       for text), and name for each FILE.

       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)

       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  © 2011 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

              info coreutils 'md5sum invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb     September 2011                        MD5SUM(1)