cocoapods相关的

查看pod的安装位置

which pod

将pod命令移除

 rm -rf /usr/local/bin/pod

查看cocoapods相关的文件

gem list | grep cocoapods 

查看pod的版本

pod --version

查看使用哪个镜像

gem source -l

*** CURRENT SOURCES ***
https://gems.ruby-china.com/
这个链接是可以打开的

移除源

gem sources --remove https://gems.ruby-china.org/

添加源

gem sources -a https://gems.ruby-china.com

更新cocoapods

gem install cocoapods

如何报错ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.6.0 directory.

使用这个方法更新

sudo gem install cocoapods

制定安装的位置

sudo gem install -n /usr/local/bin cocoapods

查看ruby的版本

gem -v