How to execute /etc/rc.conf after boot
-R Restart all enabled local services.
How can you drop to Single User Mode without rebooting?One way to kind of, sort of, restart, is to drop to single user mode and exit that.
How to execute /etc/rc.conf after boot
/etc/rc
You can "execute" it withHow to execute /etc/rc.conf after boot
sh /etc/rc.conf
but it won't do anything useful for you! Essentially it contains variables which are needed/used by/enable various scripts in /etc/rc.d/ directory. Pick any script in /etc/rc.d/ and try to understand its logic to gain a better understanding.