b2sum man page on Kali

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B2SUM(1)			 User Commands			      B2SUM(1)

NAME
       b2sum - compute and check BLAKE2 message digest

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

DESCRIPTION
       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:
       --ignore-missing
	      don't fail or report status for missing files

       --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  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.

AUTHOR
       Written by Padraig Brady and Samuel Neves.

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

COPYRIGHT
       Copyright © 2017 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
       Full documentation at: <http://www.gnu.org/software/coreutils/b2sum>
       or available locally via: info '(coreutils) b2sum invocation'

GNU coreutils 8.28		 October 2017			      B2SUM(1)
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