Easiest Way To Shake A Object?

Hello unity3D i have a question about shaking?What is the easiest way to shake an object?The Reason why i ask this question is the fact that all the other scripts that i have used to shake an objects required me to add a script to the object that i have to shake.What i want is an easy way to add shake from the characters movement script.If anyone knows how to do this?Can you please tell me how?

Check tweening libraries like iTween, I really like the shaking that it has.

And the call is just:

// target, amount, time
iTween.ShakePostion(gameObject, new Vector3(2,2,2), 0.5f);