SVR4 startup

Linux uses SVR4 startup: /etc/rc.d
control shell scripts go in /etc/rc.d/init.d
each runlevel gets its own directory
All S files are started on entering a runlevel
All K files are stopped (killed) on entering a runlevel
S/K files are usually symbolic links to the actual startup scripts
init does some argument replacement...see whiteboard
S/K files can be manually manipulated with ln or rm