To execute a script at startup of Ubuntu
Edit /etc/rc.local and add your commands
The script must always end with exit 0
To execute a script upon rebooting Ubuntu
Put your script in /etc/rc0.d
Make it executable (sudo chmod +x myscript)
Note: The scripts in this directory are executed in alphabetical order
The name of your script must begin with K99 to run at the right time.
To execute a script at shutdown