You may have explored the Grab application in the past (or maybe you haven't). There's a quick and easy way to capture your entire screen or a portion of the screen, to a file or to your desktop. Update: Look below for a new way to quickly capture a window.

1. Open up your System Preferences (Apple menu > System Preferences).
2. Under Hardware select Keyboard & Mouse.
3. As you can see you have a few options, and they are finger-benders:
   • Command-Shift-3 - Save the entire screen to a file.
   • Command-Control-Shift-3 - Copy the entire screen to the clipboard.
   • Command-Shift-4 - Save a screen selection to a file.
   • Command-Control-Shift-4 - Copy a screen selection to the clipboard.
   • New! Command-Shift-4 then Spacebar - Save a window selection to a file.
   • New! Command-Control-Shift-4 then Spacebar - Copy a window selection to the clipboard.

   

4. If you used either of the Save to File options you will discover Picture 1.png on your Desktop.