cocopods 更新mac 10.10后命令消失及 install报错

If anyone is facing issue in updating pods on Mac El Capitan, then follow the below way to update CocoaPods

sudo nvram boot-args="rootless=0"

sudo reboot

After Restart Your Mac Open Terminal And Type

sudo gem install cocoapods -V

it was still showing the error, then further added

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

转自stackflow

Link:installation - Cannot install cocoa pods after uninstalling