1B2SUM(1)                         User Commands                        B2SUM(1)
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NAME

6       b2sum - compute and check BLAKE2 message digest
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SYNOPSIS

9       b2sum [OPTION]... [FILE]...
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DESCRIPTION

12       Print or check BLAKE2 (512-bit) checksums.
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14       With no FILE, or when FILE is -, read standard input.
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16       -b, --binary
17              read in binary mode
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19       -c, --check
20              read BLAKE2 sums from the FILEs and check them
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22       -l, --length
23              digest  length  in  bits;  must  not  exceed the maximum for the
24              blake2 algorithm and must be a multiple of 8
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26       --tag  create a BSD-style checksum
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28       -t, --text
29              read in text mode (default)
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31              Note: There is no difference between binary and text mode option
32              on  GNU  system.  -z, --zero           end each output line with
33              NUL, not newline,
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35              and disable file name escaping
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37   The following five options are useful only when verifying checksums:
38       --ignore-missing
39              don't fail or report status for missing files
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41       --quiet
42              don't print OK for each successfully verified file
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44       --status
45              don't output anything, status code shows success
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47       --strict
48              exit non-zero for improperly formatted checksum lines
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50       -w, --warn
51              warn about improperly formatted checksum lines
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53       --help display this help and exit
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55       --version
56              output version information and exit
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58       The sums are computed as described in RFC  7693.   When  checking,  the
59       input  should  be a former output of this program.  The default mode is
60       to print a line with checksum, a space, a  character  indicating  input
61       mode  ('*'  for binary, ' ' for text or where binary is insignificant),
62       and name for each FILE.
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AUTHOR

65       Written by Padraig Brady and Samuel Neves.
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REPORTING BUGS

68       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
69       Report b2sum translation bugs to <https://translationproject.org/team/>
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72       Copyright © 2018 Free Software Foundation, Inc.   License  GPLv3+:  GNU
73       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
74       This  is  free  software:  you  are free to change and redistribute it.
75       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

78       Full documentation at: <https://www.gnu.org/software/coreutils/b2sum>
79       or available locally via: info '(coreutils) b2sum invocation'
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83GNU coreutils 8.30                 July 2018                          B2SUM(1)
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