For me to remember..

There are few ways to do screen capture in Mac OS X.
Follow the steps below and you will be able to do a screen capture in Mac OS X.

  • Switch to the screen that you wan to to do screen capture
  • Hold down Apple key ⌘ + Shift + 3 and release all
  • then use your mouse to click on the screen
  • Done. You will see a picture file in at your desktop. That’s the screen capture picture.

You can also do a screen capture for a portion of your screen.

  • Switch to the screen that you wan to to do screen capture
  • Hold down Apple key ⌘ + Shift + 4 and release all key
  • Now, You will see the mouse cursor will change to +
  • You can start to drag your mouse to select the portion you wish to capture.
  • Once finish, you will see a picture file in at your desktop. That’s the screen capture picture!

If you want to do a screen capture for a particular application window, you can follow this:-

  • Switch to the screen that you wan to to do screen capture
  • Hold down Apple key ⌘ + Shift + 4 and release all key
  • Now, You will see the mouse cursor will change to +
  • Press the space bar once
  • You will see the mouse cursor change to a camera
  • Now you can use the camera to select which application window to screen capture
  • Once finish, you will see a picture file in at your desktop. That’s the screen capture picture!

(originally taken from http://www.techiecorner.com/138/how-to-do-print-screen-in-mac-os-x/, thanx a lot!)