本文已参与「新人创作礼」活动，一起开启掘金创作之路。

1.查询ruby版本

ruby -v

升级Ruby环境，首先需要安装rvm

curl -L get.rvm.io | bash -s stable 

source ~/.bashrc

source ~/.bash_profile

可能会发生错误：curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused 这一般就是网络问题，配置DNS：8.8.8.8和144.144.144.144我就是这么解决的。 或者

将上面的命令行改成： curl -sSL https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer | bash

2.查询 rvm版本

rvm -v

3.查询 gem 版本

gem -v

4.查询ruby 镜像

gem sources -l

5.升级ruby环境到 最新

//查询最新版本
rvm list known 
//下载对应版本
rvm install ruby 3.0.0

这里很多小伙伴会遇到错误，大部分是因为没有安装Homebrew造成，所以所以所以要提前安装比较好

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

设置为默认版本
rvm use 3.0.0 --default

6.再次查询 看看升级成功

 ruby -v

ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-darwin14]

7.查询镜像

 gem sources -l

*** CURRENT SOURCES ***

ruby.taobao.org/

8.更换镜像地址 成腾讯云 淘宝镜像好像不行了

$ gem sources --remove https://ruby.taobao.org/

ruby.taobao.org/ removed from sources

最近发现gems.ruby-china.org/ 域名更新了org 换成 com

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

gems.ruby-china.com/ added to sources

9.最后升级 cocoaPods

 sudo gem install cocoapods  

如果成功以后 可以 pod —version 查询一下版本 但是 我自己的电脑 出现了

/Library/Ruby/Site/2.0.0/rubygems.rb:250:in `find_spec_for_exe': can't find gem cocoapods (>= 0.a) (Gem::GemNotFoundException) from /Library/Ruby/Site/2.0.0/rubygems.rb:278:in activate_bin_path from /usr/local/bin/pod:22:in <main

这个错误

公司的电脑出现了

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- utils/popen (LoadError)

from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require'

from /usr/local/Library/Homebrew/utils.rb:6:in `<top (required)>’

这个错误

我就先把 gem 版本升级了

gem update —system

然后查看 gem -v

 gem -v

2.6.8

这时候 我从网上看到一位朋友给的解决办法 我就粘贴了试了试 下面是我公司电脑出的错误 , 上面2个错误的解决办法是一样的

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/dependency.rb:296:in to_specs': Could not find 'cocoapods' (>= 0) among 25 total gem(s) (Gem::LoadError) from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/dependency.rb:307:in to_spec' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:47:in gem' from /usr/local/bin/pod:22:in <main

现找一下 pod的路径

which pod

/usr/local/bin/pod

删除目录下的文件

 sudo rm -rf /usr/local/bin/pod
Password:

获取gem

 gem list

*** LOCAL GEMS ***

activesupport (5.0.0.1) bigdecimal (default: 1.2.6) bundler-unload(1.0.2) cocoa (0.1.6) concurrent-ruby (1.0.2) executable-hooks (1.3.2) ffi (1.9.14) gem-wrappers (1.2.7) i18n (0.7.0) io-console (default:0.4.3) json (default: 1.8.1) minitest (5.4.3) pods (0.0.1) power_assert (0.2.2) psych (default: 2.0.8) rake (default: 10.4.2) rdoc (default: 4.2.0) rubygems-bundler (1.4.4) rubygems-update (2.6.8) rvm (1.11.3.9) test-unit (3.0.8) thread_safe (0.3.5) tzinfo (1.2.2)

移除程序包(我的列表没有，有的话可以删除)

 gem uninstall cocoapods -v 0.39.0
 gem uninstall cocoapods-core -v 0.39.0

在这里我没有输出 正常的会有输出

Successfully uninstalled cocoapods-0.39.0 Successfully uninstalled cocoapods-core-0.39.0

然后下面我直接安装了cocoapod

 sudo gem install cocoapods

然后下面是安装过程

………….Done installing documentation for nanaimo, colored, claide, CFPropertyList, activesupport, xcodeproj, nap, molinillo, gh_inspector, fourflusher, escape, cocoapods-try, netrc, cocoapods-trunk, cocoapods-stats, cocoapods-search, cocoapods-plugins, cocoapods-downloader, cocoapods-deintegrate, fuzzy_match, cocoapods-core, cocoapods after 15 seconds 22 gems installed

最后检查一下版本

 pod --version

1.9.1 最终完成了

番外：

$ pod --version 执行 pod --version命令 报以下错误

Traceback (most recent call last): 2: from /usr/local/bin/pod:23:in <main>' 1: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems.rb:302:in activate_bin_path' /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': can't find gem cocoapods (>= 0.a) with executable pod (Gem::GemNotFoundException)

解决方法：

sudo gem uninstall cocoapods

gem install cocoapods

好的，解决问题 ~布拉布拉布拉布拉~~~~