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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)

       -z, --zero
              end each output line with NUL, not  newline,  and  disable  file
              name escaping

   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: <>
       Report b2sum translation bugs to <>


       Copyright (C) 2018 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.


       Full documentation at: <>
       or available locally via: info '(coreutils) b2sum invocation'

GNU coreutils 8.30                 July 2018                          b2sum(1)

coreutils 8.30 - Generated Fri Jul 27 12:46:23 CDT 2018
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