Nor even was sysvinit always set up consistently, e.g. some distros just had init.d and rc.d, some had all the runlevels, and what those runlevels meant were di

Nor even was sysvinit always set up consistently, e.g. some distros just had init.d and rc.d, some had all the runlevels, and what those runlevels meant were different distro to distro