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Disable the File Extension Change Warning in Mac OS X

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Assuming you have file extensions shown in the OS X Finder, attempting to change a file extension causes a warning dialog with a confirmation box to appear. This is annoying if you know what you’re doing and you have a compelling reason to change extensions, so let’s turn it off using the command line and defaults write.

First, open the Terminal, located within the /Applications/Utilities/ directory, then copy and paste in the following command:

defaults write com.apple.finder FXEnableExtensionChangeWarning -bool false

Follow that up by relaunching the Finder with killall:

killall Finder

To reverse the change and get the warning back when you attempt to change file extensions, use the following defaults write command:

defaults write com.apple.finder FXEnableExtensionChangeWarning -bool true

Kill the Finder again for changes to take effect.

 

转自:http://osxdaily.com/2012/04/11/disable-the-file-extension-change-warning-in-mac-os-x/

 

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