How to auto start an application in openwrt?

I have created a shell with necessary functions such as start() stop() restart()

But my file is not getting started at boot time.

I have used update-rc.d command in "ubuntu" to add this file to the list of autostart applications. And it was successfully started at boot time.

But in "openwrt" I have seen an enable function. Anyone aware of how to use this enable function or is there any similar command like update-rc.d in "openwrt"

I had some reference here : http://wiki.openwrt.org/doc/techref/initscripts

Solution

/etc/init.d/ - directory will by automaticly readed and searching for boot function or START STOP. Starts at boot time.

boot() {
        echo boot
        # commands to run on boot
}

START-Position then to start

STOP-Position then to stop

START=10 
STOP=15

start() {        
        echo start
        # commands to launch application
}                 

stop() {          
        echo stop
        # commands to kill application 
}

EDITED:

In /etc/rc.common directory files are compiled whoes going to start on boot.

Enable your function: /etc/init.d/your_script.sh enable

Here you will find more information about booting http://wiki.openwrt.org/doc/techref/process.boot