Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
B2SUM(1)			 User Commands			      B2SUM(1)

NAME
       b2sum - compute and check BLAKE2	message	digest

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

DESCRIPTION
       Print or	check BLAKE2b (512-bit)	checksums.

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

       Mandatory  arguments  to	 long  options are mandatory for short options
       too.

       -b, --binary
	      read in binary mode

       -c, --check
	      read checksums from the FILEs and	check them

       -l, --length=BITS
	      digest length in bits; must not exceed the max  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:
       --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 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.

       There is	no difference between binary mode and text mode	 on  GNU  sys-
       tems.

AUTHOR
       Written by Padraig Brady	and Samuel Neves.

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

COPYRIGHT
       Copyright  (C) 2025 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.

SEE ALSO
       cksum(1)

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

GNU coreutils 9.6		 January 2025			      B2SUM(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=gb2sum&sektion=1&manpath=FreeBSD+Ports+14.3.quarterly>

home | help