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shasum

Calculate or check cryptographic SHA checksums.

More information.

• Calculate the SHA1 checksum for a file:

shasum {path/to/file}

• Calculate the SHA256 checksum for a file:

shasum --algorithm 256 {path/to/file}

• Calculate the SHA512 checksum for multiple files:

shasum --algorithm 512 {path/to/file1} {path/to/file2}

• Calculate and save the list of SHA256 checksums to a file:

shasum --algorithm 256 {path/to/file1} {path/to/file2} > {path/to/file.sha256}

• Check a file with a list of sums against the directory's files:

shasum --check {path/to/file}

• Check a list of sums and only show a message for files for which verification fails:

shasum --check --quiet {path/to/file}

• Calculate the SHA1 checksum from stdin:

{some_command} | shasum

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