報錯信息如下
You don't have write permissions for the /usr/bin directory.
-------------------解決問題-------------------
查看當前pods 版本
gem list
安裝指定版本
sudo gem install -n /usr/local/bin cocoapods -v 1.9.2
卸載指定版本
sudo gem uninstall -n /usr/local/bin cocoapods -v 1.9.3
安裝默認最新版
sudo gem install cocoapods -n /usr/local/bin