Is it possible to test rc0.d scripts without actually restarting the node? I don't mean the text of the script but rather will it be called or not? I found out that the script needs to start with K to be invoked on shut down but want to test other such issues.
On RedHat based Linux systems, run: chkconfig --list to see each service and whether they are enabled or disabled at each run level.
For newer Ubuntu systems (and may be Debian), use: service --status-all