When you have no idea where the original wallpaper image is stored from your background, you can use the following command to display the full path to the currently active desktop image. This would be display directly on the wallpaper itself.
Mr.W
Enable the hidden ‘go to recent space’ gesture
When you use Mission Control often, you’ll like the following defaults-write. It lets you immediately jump back to the most recently used Space. You can activate this option with a four-fingered double tap on the trackpad (or Magic Mouse). Enable the gesture with the following command:
iTunes: Disable the Genius sidebar
iTunes contained a genius sidebar that displayed related music in the iTunes store. You can disable this sidebar with the following command:
Disable Dashboard as a space in Mission Control
By default Dashboard appears as the first Spaces in mission control. If you are not a Dashboard user, you can hide Dashboard from appearing as Spaces with the following command:
Enable auto accept of incoming FaceTime calls
You can use your ac as a security camera and watching live video straight from the iPhone, iPod touch, iPad or Mac. Enter the following command to automatically accept incoming FaceTime calls on your Mac. defaults write com.apple.FaceTime AutoAcceptInvites -bool true Setup a FaceTime call your Mac and automatically the video feed will be show up. Disable auto accept with defaults write com.apple.FaceTime AutoAcceptInvites -bool false
Disable the resume function in Safari (OS X)
If you want some extra privacy, it’s possible to disable te resume function in Safari. After applying the command Safari will not remember the opened windows which where open at time of closing.
Set safari activity view collapsed by default
The Safari activity window can be useful for finding resources in a web page. With a lot of pages open, it shows too much information by default, as each web page’s disclosure triangle is expanded. To make the Activity window open with all sites collapsed by default, close Safari and type: