How to fully remove Xcode 4
Solution 1:
I use this command:
sudo /Developer/Library/uninstall-devtools --mode=all
Edit (1 year later):
If you've downloaded Xcode from the App Store, it's self-contained, as @mediaslave suggests. You can just drag it to the trash or use AppZapper (or a similar utility) to remove the developer tools.
If you're looking to update it, you can also do that straight through the App Store.
Solution 2:
sudo /[xcode-path]/Library/uninstall-devtools --mode=all
Normally, [xcode-path] means /Developer, but if you have multiple versions, for example 3 is the first installed, 4 is second, /Developer will be xcode 3's root derectory and /Xcode4 for xcode 4.
Solution 3:
Ensure Xcode, iOS Simulator, and the Mac App Store apps aren't running, then trying running the uninstall script at this (different!) location:
/Library/Developer/Shared/uninstall-devtools
This is where I found it.
Also delete Install Xcode.app
from Applications folder, and Empty Trash.
Then run App Store again, and find/install Xcode.
Solution 4:
su
(or sudo su
, whatever)
find / -name uninstall-devtools
This will reveal where the utility is...
Solution 5:
If you have XCode 4.3.1, just Move To Trash the XCode.app file in the Applications folder.