This simple and brief tutorial will show you how to install the Lock Keys indicator in Ubuntu using ppa. If your Ubuntu laptop doesn’t have any LED indicators for the lock keys, it may be useful. The indicator displays notifications on top-right corner when you press on Lock Keys and the applet on top-panel shows you whether your caps lock, num lock, or scroll lock keys are on.
You can set it to show the indicator when lock key is inactive.
Install Lock Keys indicator using ppa:
The keylock indicator daily build ppa provides latest packages for Ubuntu 12.10 Quantal, 12.04 Precise and 11.10 Oneiric.
Hit Ctrl+Alt+T to open terminal, then run following 3 commands to install it from the ppa repository:
sudo add-apt-repository ppa:tsbarnes/indicator-keylock-daily
sudo apt-get update
sudo apt-get install indicator-keylock
Once installed, launch it from the Unity Dash. It will be set to automatically start at next login.