B2SUM(1)                         User Commands                        B2SUM(1)

       b2sum - compute and check BLAKE2 message digest

       b2sum [OPTION]... [FILE]...

       Print or check BLAKE2 (512-bit) checksums.

       With no FILE, or when FILE is -, read standard input.

       -b, --binary
              read in binary mode

       -c, --check
              read BLAKE2 sums from the FILEs and check them

       -l, --length
              digest  length  in  bits;  must  not  exceed the maximum for the
              blake2 algorithm and must be a multiple of 8

       --tag  create a BSD-style checksum

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

   The following five options are useful only when verifying checksums:
              don't fail or report status for missing files

              don't print OK for each successfully verified file

              don't output anything, status code shows success

              exit non-zero for improperly formatted checksum lines

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

       --help display this help and exit

              output version information and exit

       The sums are computed as described in RFC  7693.   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.

       Written by Padraig Brady and Samuel Neves.

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report b2sum translation bugs to <http://translationproject.org/team/>

       Copyright (C) 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.

       Full documentation at: <http://www.gnu.org/software/coreutils/b2sum>
       or available locally via: info '(coreutils) b2sum invocation'

GNU coreutils 8.26               February 2017                        B2SUM(1)

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