干净卸载Xcode

1. 根目录下的必须要用管理员权限：

sudo rm -rf /Applications/Xcode.app

sudo rm -rf /Library/Preferences/com.apple.dt.Xcode.plist

2. 然后删除自己目录下的：

rm -rf ~/Library/Preferences/com.apple.dt.Xcode.plist rm -rf ~/Library/Caches/com.apple.dt.Xcode rm -rf ~/Library/Application\ Support/Xcode

3. 以及和开发者相关的：

rm -rf ~/Library/Developer/Xcode rm -rf ~/Library/Developer/CoreSimulator rm -rf ~/Library/Developer/XCPGDevices

4. xcode缓存目录

~/Library/Developer/Xcode/DerivedData