How to verify SHA checksum for FreeBSD ISO file

% shasum -a 256 --ignore-missing -c CHECKSUM.SHA256-FreeBSD-13.0-RELEASE-amd64

• -a : Algorithm to use. For example, 1 (default), 224, 256, 384, 512, 512224, 512256
• -c : Read SHA sums from the FILEs and check them
• --ignore-missing: Do not fail or report status for missing files.