Can I save some time from typing "optirun"?

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http://askubuntu.com – As title, I've installed BUMBLEBEE and now my NVidia Graphics card is enabled. However, I have to type "optirun" before the command I want to executed (e.x. $ optirun openrave) to change the graphics card to the NVidia OPTIMUS one, and it sometimes cause some trouble if I don't. Is there any tip that I can automatically change the Graphics Card mode to the NVidia OPTIMUS one? (HowTos)