A screen virtual LED on linux

Question

We have some LEDs on our machine to indicate the status of Caps Lock, Num Lock etc. Now I need a virtual LED in Linux to notify something.

For example, I wrote a script to monitor a website. When the website changes, my script will output some information. And I want to notify myself whenever the script output something. I know the program notify-send can do this. But notify-send may disturb me. I'd like to find a utility which works like a LED.

NOTE: I am not finding a LED indicator of the real LED status. I want a LED analog utility so that I can change it's color/brightness on my screen/toolbar.

Say, the program name is led. When I start the program, there will be a icon in the toolbar with default color black. And I can use the following command to change the status of this `LED'

$ led red     #then the virtual LED change color to red
$ led blue    #change color to blue
$ led flicker #then the light flicker

And so on. The above description is just an example. But the basic idea is something like that. Can this be understood? Any idea?

Answer 1

Take a look at this. Looks like it's very easy, I think you only need to write a shell script.

http://www.avrfreaks.net/wiki/index.php/Documentation:Linux/LEDs