CmdID

CmdID / Commands

shasum

Calculate SHA cryptographic checksums. tldr-pages

On several platforms

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Several platforms

from tldr-pages, CC BY 4.0

Calculate the SHA1 checksum for one or more files

shasum path/to/file1 path/to/file2 ...Identify

Calculate the SHA checksum for one or more files with the specified algorithm

shasum --algorithm 1 path/to/file1 path/to/file2 ...Identify

Calculate a SHA1 checksum from stdin

command | shasumIdentify

Calculate and save the list of SHA256 checksums to a file

shasum --algorithm 256 path/to/file1 path/to/file2 ... >path/to/file.sha256Identify

Read a file of SHA checksums and filenames and verify all files have matching checksums (the algorithm will be automatically detected)

shasum --check path/to/fileIdentify

Only show a message for missing files or when verification fails

shasum --check --quiet path/to/fileIdentify

Only show a message when verification fails, ignoring missing files

shasum --ignore-missing --check --quiet path/to/fileIdentify

Check a known SHA checksum of a file (Note: two spaces separating checksum and path)

echo 'known_sha_checksum_of_the_file path/to/file' | shasum --checkIdentify