I have logged in to my android phone through SSH [installed SSH client in android and through putty from windows]. Now I can access all the directories like root, dev, etc, of the phone. Can someone tell me what's the native method to access the devices and sensors of the phone .. I mean, how can I control say, the camera, just from this Linux shell terminal of the phone.
I haven't tried this, but since android isn't so different than the underlying Linux system, you might be able to do the same thing as described here. The device file name might be different though and you might need to be rooted.
I found out that the simplest method is to use IP Webcam app. It has HTTP API so you can do all kinds of things with it.
To be fair, I'd also really like to know if there's a way with just shell.