The /etc/rc.d/rc.local script is executed by the
init command at boot time or when changing
runlevels. Adding commands to the bottom of this script is an easy way
to perform necessary tasks like starting special services or initialize
devices without writing complex initialization scripts in the
/etc/rc.d/init.d/ directory and creating symbolic
links.
The /etc/rc.serial script is used if serial ports
must be setup at boot time. This script runs
setserial commands to configure the system's serial
ports. Refer to the setserial man page for more
information.
