Disable warning when changing file extensions in Finder

Apr 24, '12 07:30:00AM

Contributed by: kirkmc

You know how when you want to change a file extension in the Finder, you get a warning asking if you're sure you want to change the extension? In most cases, if you are changing the extension, you are doing so because you want to, and you know the consequences.

You can disable this warning. Run the following command in Terminal:

defaults write com.apple.finder FXEnableExtensionChangeWarning -bool false
Then relaunch the Finder, either by Option-clicking on the Finder's icon in the Dock and choosing Relaunch Finder, or by running this in Terminal:
killall Finder
(I found this when browsing through the long list of defaults commands that we recently published as a hint. But when googling it, I noticed that OSXDaily had recently published. So a shout out to them.)

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