1B2SUM(1)                         User Commands                        B2SUM(1)
2
3
4

NAME

6       b2sum - compute and check BLAKE2 message digest
7

SYNOPSIS

9       b2sum [OPTION]... [FILE]...
10

DESCRIPTION

12       Print or check BLAKE2b (512-bit) checksums.
13
14       With no FILE, or when FILE is -, read standard input.
15
16       Mandatory  arguments  to  long  options are mandatory for short options
17       too.
18
19       -b, --binary
20              read in binary mode
21
22       -c, --check
23              read checksums from the FILEs and check them
24
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
28
29       --tag  create a BSD-style checksum
30
31       -t, --text
32              read in text mode (default)
33
34       -z, --zero
35              end  each  output  line  with NUL, not newline, and disable file
36              name escaping
37
38   The following five options are useful only when verifying checksums:
39       --ignore-missing
40              don't fail or report status for missing files
41
42       --quiet
43              don't print OK for each successfully verified file
44
45       --status
46              don't output anything, status code shows success
47
48       --strict
49              exit non-zero for improperly formatted checksum lines
50
51       -w, --warn
52              warn about improperly formatted checksum lines
53
54       --help display this help and exit
55
56       --version
57              output version information and exit
58
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.
64
65       Note: There is no difference between binary mode and text mode  on  GNU
66       systems.
67

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/>
74

76       Copyright  ©  2023  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'
86
87
88
89GNU coreutils 9.3               September 2023                        B2SUM(1)
Impressum