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 in-
       put 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: <https://www.gnu.org/software/coreutils/>
       Report b2sum translation bugs to <https://translationproject.org/team/>

       Copyright  (C) 2018 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://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: <https://www.gnu.org/software/coreutils/b2sum>
       or available locally via: info '(coreutils) b2sum invocation'

GNU coreutils 8.30                August 2018                         B2SUM(1)

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