Switch between different versions of Xcode and the included developer tools. Also used to update the path to Xcode if it is moved after installation. More information: https://developer.apple.com/library/archive/technotes/tn2339/_index.html.
xcode-select --install
xcode-select --switch path/to/Xcode.app/Contents/Developer
xcode-select --switch path/to/Xcode_file.app
xcode-select --print-path
sudo xcode-select --reset