1.获取当前文件夹路径
pwd
2.创建文件
touch ~/.zshrc
3.打开文件
open ~/.zshrc
4.编辑文件
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
export PATH=/Users/mmy/Downloads/software_install/android_studio/flutter_sdk/flutter_3.7.9/bin:$PATH
5.重新加载文件
source ~/.zshrc
6.校验是否成功
flutter doctor