There is an example of a programme that differentiates between long and short push-button pushes on the Arduino.cc website, but I was not taken it. However their was an example I did like the look of, ...

You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the button is not pressed and 1 that the button is ...