b2sum

all

Calculate BLAKE2 cryptographic checksums.

Options (1)

-c, --checkboolean

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

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

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]