Man page - b3sum(1)

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Manual

B3SUM

NAME
SYNOPSIS
DESCRIPTION
Arguments:
OPTIONS

NAME

b3sum - b3sum

SYNOPSIS

b3sum [ OPTIONS ] [ FILE ]...

DESCRIPTION

Arguments:

[FILE]...

Files to hash, or checkfiles to check

When no file is given, or when - is given, read standard input.

OPTIONS

--keyed

Use the keyed mode, reading the 32-byte key from stdin

--derive-key <CONTEXT>

Use the key derivation mode, with the given context string

Cannot be used with --keyed .

-l , --length <LEN>

The number of output bytes, before hex encoding

[default: 32]

--seek <SEEK>

The starting output byte offset, before hex encoding

[default: 0]

--num-threads <NUM>

The maximum number of threads to use

By default, this is the number of logical cores. If this flag is omitted, or if its value is 0, RAYON_NUM_THREADS is also respected.

--no-mmap

Disable memory mapping

Currently this also disables multithreading.

--no-names

Omit filenames in the output

--raw

Write raw output bytes to stdout, rather than hex

--no-names is implied. In this case, only a single input is allowed.

--tag

Output BSD-style checksums: BLAKE3 ([FILE]) = [HASH]

-c , --check

Read BLAKE3 sums from the [FILE]s and check them

--quiet

Skip printing OK for each checked file

Must be used with --check .

-h , --help

Print help (see a summary with ’-h’)

-V , --version

Print version