tldr/pages/common/shasum.md

shasum

Calculate SHA cryptographic checksums. More information: https://manned.org/shasum.

• Calculate the SHA1 checksum for one or more files:

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

• Calculate the SHA256 checksum for one or more files:

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

• Calculate the SHA512 checksum for one or more files:

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

• Calculate a SHA1 checksum from stdin:

{{command}} | shasum

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

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

• Read a file of SHA1 sums and filenames and verify all files have matching checksums:

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

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

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

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

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