I have seen several questions (and blog posts, elsewhere) with Java code for controlling the notification LED on an Android device. That's not what I'm looking for.
I'm wondering if there is any way to access the appropriate commands / controls / frameworks from the shell (Perl, ruby).
What I want, ultimately, is a very simple "heartbeat" pulse - when the device is on and the display is off, blink at me.
Alternatively, if anyone has written a really simple "toy" app that blinks the LED, I'd love to play with it.