---
name: "uu-b2sum"
section: "1"
platform: "linux"
package: "uutils-coreutils"
version: "0.12.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/uu-b2sum"
---

# uu-b2sum(1)

Print or check the BLAKE2b checksums

## NAME

b2sum - Print or check the BLAKE2b checksums

## SYNOPSIS

**b2sum** \[OPTIONS\] \[FILE\]...

## DESCRIPTION

Print or check the BLAKE2b checksums

## OPTIONS

- **-c**, **--check**

  read checksums from the FILEs and check them

- **-w**, **--warn**

  warn about improperly formatted checksum lines

- **--status**

  don't output anything, status code shows success

- **--quiet**

  don't print OK for each successfully verified file

- **--ignore-missing**

  don't fail or report status for missing files

- **--strict**

  exit non-zero for improperly formatted checksum lines

- **-l**, **--length**

  digest length in bits; must not exceed the max size and must be a multiple of 8 for blake2b; must be 224, 256, 384, or 512 for sha2 or sha3

- **--tag**

  create a BSD style checksum

- **-z**, **--zero**

  end each output line with NUL, not newline, and disable file name escaping

- **-h**, **--help**

  Print help

- **-V**, **--version**

  Print version

## VERSION

v(uutils coreutils) 0.12.0