The Mac App Store has a debug menu just like the most standard Apple applications in OS X. From this menu you can access various of other options such as deleting cookies or the quick search for updates. Close the Mac App Store app and use the following command in Terminal to enable the debug menu.
There is no system preference setting for adjusting the cursor blink rate in OS X, as with many hidden settings you can change the blink rate directly using a defaults write command (OS X 10.9 and above).
By default, screenshots (cmd⌘ + shift⇧ + 3) are saved on your desktop along with the date and time they were taken. It’s possible to to remove the date and time stamp from the file names of screenshots, use the following command in Terminal:
Do you want to keep the Dock in OS X organized? You can do this with a blank space. This way, you can divide your Dock in different groups. Copy and paste the following command in a Terminal window. After the restart, the space will be added to the Dock, which you can move to any place.
Do you often have to do a presentation on your Mac and don’t want others to see what’s on your desktop? It’s possible to quickly hide the icons on your desktop. Launch Terminal and enter the following command.
It is possible to disable the OS X Finder menu option: ‘Finder ▸ Preferences’ (cmd⌘ + ,). This will prohibit setting changes in the OS X Finder application.
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.