brew install node brew install watchman npm config set registry https://registry.npm.taobao.org --global npm config set disturl https://npm.taobao.org/dist --glob npm install -g yarn react-native-cli yarn config set registry https://registry.npm.taobao.org --global yarn config set disturl https://npm.taobao.org/dist --global
https://reactnative.cn/docs/getting-started/
创建文件：touch filePath
创建文件夹：mkdir fileDirPath