sha256sum

Calculate SHA256 cryptographic checksums. More information: https://www.gnu.org/software/coreutils/manual/html_node/sha2-utilities.html.

sha256sum path/to/file1 path/to/file2 ...

sha256sum path/to/file1 path/to/file2 ... > path/to/file.sha256

command | sha256sum

sha256sum --check path/to/file.sha256

sha256sum --check --quiet path/to/file.sha256

sha256sum --ignore-missing --check --quiet path/to/file.sha256