1、问题一：Git 使用之鉴权失败
解决方法 地址：https://blog.csdn.net/Zhao_knight/article/details/121527347
2、问题二：xcrun: error: unable to find utility "simctl", not a developer tool or in PATH
解决办法：
意思是环境变量少developer tool, 解决方法就是打开xcode的设置，
Preferences > Locations > Command Line Tools 中选择下当前的xcode，可能会提示输入密码。完成即可。
3、问题三：[iOS] xcodebuild: Pods.xcodeproj: warning: The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 15.2.99. (in target 'CLToast' from project 'Pods')
podfiled 文件中添加：
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.0'
end
end
end
4、问题四：cocoapod安装，第三方库的安装与删除
pod repo remove master
// 之后需要
pod setup
pod repo update
pod repo add master http://git.oschina.net/akuandev/Specs.git
pod repo update --verbose
5、删除pod库的库
/Users/sdch/.cocoapods/repos