Cocoapods的版本升级

1.更新gem，国内需切换 gem source

$ sudo gem update --system

$ gem sources --add https://ruby.taobao.org/ --remove https://rubygems.org/ 
$ gem sources -l
*** CURRENT SOURCES***
 https://ruby.taobao.org[/code] 
2.安装 cocoapods
$ sudo gem install cocoapods
$ pod setup


在执行sudo gem install cocoapods出现如下报错

ERROR:  While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/xcodeproj


第一种解决办法如下（我是用此方法解决的）

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


第二种解决方法如下

mkdir -p $HOME/Software/ruby

export GEM_HOME=$HOME/Software/ruby

gem install cocoapods

export PATH=$PATH:$HOME/Sofware/ruby/bin

pod --version


一行一行的输入

查看 Ruby 版本

$ ruby -v
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-darwin14]


查看 pod 版本

$ pod --version

0.39.0