Regex Tester & Validator

This regular expression matches a specific configuration line for automatic security updates, typically found in Debian/Ubuntu's `unattended-upgrades` settings. It looks for the active `${distro_id}:${distro_codename}-security` string while attempting to exclude commented-out lines using a negative lookahead for `//`. It is highly useful for server automation scripts that need to verify or extract active security configurations.