SHA256SUM(1) General Commands Manual SHA256SUM(1) (NAME) uu-sha256sum - SHA256 (SYNOPSIS) sha256sum [] []... (DESCRIPTION) SHA256. (OPTIONS) -c, --check -w, --warn --status --quiet OK --ignore-missing --strict --tag BSD -z, --zero NUL -h, --help -V, --version (VERSION) v(uutils coreutils) 0.11.0 2026-09-01 SHA256SUM(1)