You can choose to hide/show the Dock automatically. This has a default speed to display the dock. You can speed it up with a defaults write command. This command removes the delay from when a cursor is hovered near the Dock. It doesn’t change the animation speed of the dock, only the response to the cursor.
OS X always keeps a local cache of resolved DNS queries (IP address) for future reference. But sometimes it may be necessary to clear (flush) the cache. You can do this with a terminal command, this will refresh the local DNS cache.
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.
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.
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.
Turn off Mission Control’s zoom effect that appear whenever it’s activated or deactivated in OS X 10.7 and above.
The default theme in OS X still has, despite the change in iOS 7, lots of shades and gradient effects incorporated in the theme. This can be disabled by using a terminal command and give the finder window and a few other programs a flatter look. The resulting appearance is flatter and whiter window that’s showing brighter colors and less shadowing. Add the following command in Terminal: