/etc/apt/sources.list:deb http://deb.debian.org/debian/ bookworm          main contrib non-free non-free-firmware
/etc/apt/sources.list:deb http://deb.debian.org/debian/ bookworm-updates  main contrib non-free non-free-firmware
/etc/apt/sources.list:deb http://security.debian.org/   bookworm-security main contrib non-free non-free-firmware