Running scripts on startup/shutdown @Ubuntu


As I’m using RxTx libraries for serial communication and I couldn’t handle the locks and permissions on the ports when Tomcat closes( please comment if you know:)), I need to remove locks and give appropriate permissions to ports on startup. Today I saw a post @ and I tried it on my pc. I’m using Ubuntu 11.10.

First write your script and make it executable and move it to /etc/init.d/.

$ chmod +x /home/gokceng/Desktop/

$ sudo cp /home/gokceng/Desktop/ /etc/init.d/

$ sudo update-rc.d start 99 2 3 4 5 .

The parameters on the last line: : your script to run

start : When your script run, it can be  stop

99 : On start in this scenario, it makes your script to run after everything. It could be 1 for being first or anything between 1 and 99.

2 3 4 5 : run levels of your  script

. : Don’t forget to put this 🙂

My script is like that, it is useless but it is only for explanation:

# Provides: myScript
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start daemon at boot time
# Description: Enable service provided by daemon.
sudo chmod 666 /home/gokceng/Desktop/myTest

The lines between BEGIN INIT INFO and END INIT INFO is for getting “missing LSB information” error. You can get more information about these lines from

For more compact way of running your script both on startup and shutdown you can also use this:

update-rc.d yourScript start 20 2 3 4 5 . stop 20 0 1 6 .

You can see other usages check this link:

I hope it helps you.