#!/usr/bin/env sh
# YES_ZSH
# YES_BASH
# YES_DASH

trash() {
    [ $# -le 1 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
    dd status=none if=/dev/random bs=1 count="${1:?missing count argument}"
}

[ "${SOURCING:-0}" -gt 0 ] || trash "$@"