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       -z, --zero
32              end each output line with NUL, not  newline,  and  disable  file
33              name escaping
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35   The following five options are useful only when verifying checksums:
36       --ignore-missing
37              don't fail or report status for missing files
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39       --quiet
40              don't print OK for each successfully verified file
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42       --status
43              don't output anything, status code shows success
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45       --strict
46              exit non-zero for improperly formatted checksum lines
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48       -w, --warn
49              warn about improperly formatted checksum lines
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51       --help display this help and exit
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53       --version
54              output version information and exit
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56       The sums are computed as described in RFC 7693.  When checking, the in‐
57       put should be a former output of this program.  The default mode is  to
58       print  a line with checksum, a space, a character indicating input mode
59       ('*' for binary, ' ' for text or where binary  is  insignificant),  and
60       name for each FILE.
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62       Note:  There  is no difference between binary mode and text mode on GNU
63       systems.
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AUTHOR

66       Written by Padraig Brady and Samuel Neves.
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REPORTING BUGS

69       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
70       Report any translation bugs to <https://translationproject.org/team/>
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73       Copyright © 2020 Free Software Foundation, Inc.   License  GPLv3+:  GNU
74       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
75       This  is  free  software:  you  are free to change and redistribute it.
76       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

79       Full documentation <https://www.gnu.org/software/coreutils/b2sum>
80       or available locally via: info '(coreutils) b2sum invocation'
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84GNU coreutils 8.32                 June 2021                          B2SUM(1)
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