Adding a startup script to ubuntu

Its quite trivial but I have seen lot of people struggling for it including me. So here it goes -

write the startup script. say foo.sh in /etc/init.d folder. I dont need tell that it is to be done as root.

#!/bin/sh

start()
{
#launch your binary. For example if you want to lauch svnserver as a daemon at startup then

if ps -ef | grep "svnserve -d" | grep -v grep
then
echo svnserver is already running as a daemon
else
svnserve -d
fi
}
stop()
{
#stop your binary. You can do it by retrieving the PID and killing it
if ps -ef | grep "svnserve -d" | grep -v grep
then
var=`ps -ef | grep "svnserve -d" | grep -v grep | awk '{ print $2 }'
kill $var
else
echo svnserver is already stopped
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
start
stop
;;
*)
echo "Usage - foo.sh start/stop/restart"
;;
esac



Once the script is done run -

update-rc.d foo.sh defaults

This will add the symbolic links for different run levels

Make the script executable
chmod +x foo.sh

Now whenever you will reboot, foo.sh will invoke your binary.