How to disable the Finder's extension change warning

To carry on with my ‘how to disable’ series, here’s a simple but useful tip.
Do you find that the OS X Finder’s warning dialog to be fairly irritating when you’re deliberately changing file extensions? You know what you want to do and you don’t need the Finder to constantly keep checking that this is OK with you!
If you decide that you don’t want to keep getting the extension change dialog warning as shown below, this can be disabled.

How to disable the Finder's extension change warning.

To remove the file extension dialog warnings, all you need to do is log in as an admin user and enter one line of command in the Terminal application (located in /Applications/Utilities/) as shown below:

defaults write FXEnableExtensionChangeWarning -bool false;killall Finder

If you do want to revert back to the default setting, just enter the following command:

defaults write FXEnableExtensionChangeWarning -bool true;killall Finder

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This feature has been tested using OS X v10.8.4 which was the latest Mac OS release at the time of writing.