If you prefer a minimalist Mac OS X Dock, set the Dock to only display active running apps.
Mr.W
Change the frequency of software updates checks
Mac OS X 10.8 Mountain Lion removed the ability to set the frequency of checks for software updates. The default frequency is 7 days, use following command to change this:
Add a message to the login screen
The login screen of OS X by default only shows the computer name. It is however possible to add a message or warning to the login screen. Use following command to do this.
Disable ‘Connect to server’ menu option in OS X Finder
Disable the menu option: ‘Go ▸ Connect to server…’ (cmd⌘ + K) in the Mac OS X Finder menubar.
Enable the Safari debug menu
Safari has a hidden Debug-menu that offers some options for debugging the browser. The debug menu is different from the Developer menu. You can perform load and stress tests en additional logging features.
Hiding the files on your Mac OS X desktop
If you’re using your Mac in public, you might not want everybody to see the mess on your desktop! You can run the following command that will hide the icons from you desktop.
Disable Smooth Scrolling in Mountain Lion
In Mountain Lion 10.8 an animated smooth scrolling feature has been added to Mac OS X. Return to the pre-Smooth Scrolling functionality with this command: