If you have a computer used in a school or at work and you want to disable the ability to change Finder preferences you can with a simple Terminal trick. This will disable the Finder > Preferences option within Finder and disables changes. This also disables the keyboard shortcut so you can’t get around it. Its a great little tip from people changing things.
Stop People From Changing Finders Preferences
The command is very simple to implement within Finder. If you want to read about this tip and more Finder tips you can in a previous post on Finder hacks. If you can’t see the video people (for people using RSS) you can watch the video on Youtube.