更新cocoapods遇到的坑

1.在升级ruby时报如下错误

ERROR:While executing gem ...(Errno::EPERM)

Operation not permitted -

/usr/bin/update_rubygems

解决办法: sudo gemupdate -n /usr/local/bin –system

2.安装brew的命令执行方式

/usr/bin/ruby -e "$(curl-fsSLhttps://raw.githubusercontent.com/Homebrew/install/master/install)"

3.更新cocopods时报错

ERROR:While executing gem ...(Errno::EPERM)

Operation not permitted - /usr/bin/xcodeproj

解决办法：sudo gem install -n /usr/local/bin cocoapods --pre