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 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.

       Note: There is no difference between binary mode and text mode on GNU systems.

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  ©  2023  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'