MacOS Sierra Upgrade Issues Little Note

After upgrading to MacOS Sierra, there is a problem with releasing some of the software 1.git unavailable

$ gitxcrun:error:invalid Active developer Path (/library/developer/commandlinetools), missing xcrun at:/library/develo Per/commandlinetools/usr/bin/xcrun

Solutions

$xcode-select--install Xcode-select:note:install requested for command line developer tools

2.QQ Not available

Solutions

Upgrade to the latest version

3. No problems found in other versions

such as Brew MySQL PHP nginx office and so on are working properly

4. The system size is reduced after the upgrade

MacOS Sierra Upgrade Issues Little Note