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 BLAKE2b (512-bit) checksums.
13
14       With no FILE, or when FILE is -, read standard input.
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16       Mandatory  arguments  to  long  options are mandatory for short options
17       too.
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19       -b, --binary
20              read in binary mode
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22       -c, --check
23              read checksums from the FILEs and check them
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25       -l, --length=BITS
26              digest length in bits; must not exceed the max  for  the  blake2
27              algorithm and must be a multiple of 8
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29       --tag  create a BSD-style checksum
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31       -t, --text
32              read in text mode (default)
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34       -z, --zero
35              end  each  output  line  with NUL, not newline, and disable file
36              name escaping
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38   The following five options are useful only when verifying checksums:
39       --ignore-missing
40              don't fail or report status for missing files
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42       --quiet
43              don't print OK for each successfully verified file
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45       --status
46              don't output anything, status code shows success
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48       --strict
49              exit non-zero for improperly formatted checksum lines
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51       -w, --warn
52              warn about improperly formatted checksum lines
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54       --help display this help and exit
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56       --version
57              output version information and exit
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59       The sums are computed as described in RFC 7693.  When checking, the in‐
60       put  should be a former output of this program.  The default mode is to
61       print a line with: checksum, a space, a character indicating input mode
62       ('*'  for  binary,  ' ' for text or where binary is insignificant), and
63       name for each FILE.
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65       Note: There is no difference between binary mode and text mode  on  GNU
66       systems.
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AUTHOR

69       Written by Padraig Brady and Samuel Neves.
70

REPORTING BUGS

72       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
73       Report any translation bugs to <https://translationproject.org/team/>
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76       Copyright  ©  2021  Free Software Foundation, Inc.  License GPLv3+: GNU
77       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
78       This is free software: you are free  to  change  and  redistribute  it.
79       There is NO WARRANTY, to the extent permitted by law.
80

SEE ALSO

82       cksum(1)
83
84       Full documentation <https://www.gnu.org/software/coreutils/b2sum>
85       or available locally via: info '(coreutils) b2sum invocation'
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89GNU coreutils 9.0                 March 2022                          B2SUM(1)
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