b2sum

b2sum [OPTIONS] [FILE]...

Print or check the BLAKE2b checksums

Options

--binary, -b

--check, -c

ck-common-help-check

--warn, -w

ck-common-help-warn

--status

ck-common-help-status

--quiet

ck-common-help-quiet

--ignore-missing

ck-common-help-ignore-missing

--strict

ck-common-help-strict

--length, -l

ck-common-help-length

--tag

ck-common-help-tag

--text, -t

ck-common-help-text

--zero, -z

ck-common-help-zero

Examples

Calculate the BLAKE2 checksum for one or more files:

b2sum {{path/to/file1 path/to/file2 ...}}

Calculate and save the list of BLAKE2 checksums to a file:

b2sum {{path/to/file1 path/to/file2 ...}} > {{path/to/file}}.b2

Calculate a BLAKE2 checksum from stdin:

{{command}} | b2sum

Read a file of BLAKE2 checksums and filenames and verify all files have matching checksums:

b2sum {{[-c|--check]}} {{path/to/file}}.b2

Only show a message for missing files or when verification fails:

b2sum {{[-c|--check]}} --quiet {{path/to/file}}.b2

Only show a message when verification fails, ignoring missing files:

b2sum --ignore-missing {{[-c|--check]}} --quiet {{path/to/file}}.b2

Check a known BLAKE2 checksum of a file:

echo {{known_blake2_checksum_of_the_file}} {{path/to/file}} | b2sum {{[-c|--check]}}

The examples are provided by the tldr-pages project under the CC BY 4.0 License.

Please note that, as uutils is a work in progress, some examples might fail.