turn on and off gsm shield by programming????

can i turn on and off gsm shield by programming? if yes can anyone send me code for that plzzz?

can i turn on and off gsm shield by programming?

Yes. No. Maybe. See, it all depends on which shield you have. Surely, you don't expect US to keep track of that, do you?

I did this once, I used a digital output from arduino and a opto transistor to toggle the power button on the shield. Although this is not all soft, the power can now be controlled by the arduino.