man pages section 1: User Commands

b2sum (1)

Name

b2sum - compute and check BLAKE2 message digest

Synopsis

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

Description

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)

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

COPYRIGHT
       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.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+--------------------+
       |ATTRIBUTE TYPE |  ATTRIBUTE VALUE   |
       +---------------+--------------------+
       |Availability   | file/gnu-coreutils |
       +---------------+--------------------+
       |Stability      | Uncommitted        |
       +---------------+--------------------+

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



NOTES
       Source  code  for open source software components in Oracle Solaris can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.

       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source  was  downloaded  from   https://ftp.gnu.org/gnu/coreutils/core-
       utils-8.30.tar.xz.

       Further information about this software can be found on the open source
       community website at https://www.gnu.org/software/coreutils.



GNU coreutils 8.30                 July 2018                          B2SUM(1)