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b2sum

Calculate BLAKE2 cryptographic checksums.

More information.

• Calculate the BLAKE2 checksum for a file:

b2sum {path/to/file}

• Calculate BLAKE2 checksums for multiple files:

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

• Calculate the BLAKE2 checksum from stdin:

{some_command} | b2sum

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

b2sum --check {path/to/file.b2}

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

b2sum --check --quiet {path/to/file.b2}

• Only show a message for files for which verification fails, ignoring missing files:

b2sum --ignore-missing --check --quiet {path/to/file.b2}

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