You can view windows full screen in many applications, this means that the application window uses the entire screen. But the animation is slow and is too long. You can disable the animation with the following command. Launch Terminal and enter the following command.
10.9
Re-activate the Shutdown Dialog
When you press the power button on your Mac (installed with OS X Mavericks or Yosemite) your Mac falls into sleepmode. You can disable the power button’s directly sleep mode and have the ‘old’ shutdown dialog appearing instead, open OS X Terminal window and enter:
Disable ‘Stay on front’ for OSX help windows
When opening the help window in OS X, the window will always open and stays on the front. This can be very frustrating, so you can use the following command in Terminal to get the help-center window behave like all other windows in OS X.
10.9: Disable App Nap in OS X
App Nap helps you save power and battery life when you’re working with multiple apps at the same time. You can disable this feature for each application by using the info window in the Finder (select the app in Finder and activate this window with cmd⌘ + i). With the following command you can disable App Nap system wide.
Finder: Disable ‘Go to Folder’ menu option
Disable the menu option: ‘Go ▸ Go to folder’ in the Mac OS X Finder menubar.
10.9: Stop the power button from putting your mac in stand-by (sleep) mode (archive)
Since OS X 10.9 mavericks, the behavior of the power button has changed. Now, when you quickly press this button, it will OS X be placed in standby mode. With the following command you can use the power button function rollback to previous versions of OS X.
E-mail photos from iPhoto with the mail application
When you send an image from iPhoto through an email, you can do this with the built-in mail function. Here you must use the email templates. With the following command you can disable this behavior and send pictures through the mail application and immediately create a new message.