前景提要：
电脑重装系统辣，导致电脑之前安装的ruby环境以及cocoapods等其他相关环境全都没了，所以都需要重新整了，踩了好多坑，所以打算记录下来，下次可别这么折磨人了，也希望有相同问题的小伙伴少走一些弯路。之前踩坑错误的流程我就不总结了，直接贴从头到脚无痛顺利安装cocoapods的过程！！
*还有我是重装系统,所以当前系统无之前相关版本，都是重新安装的
第一步，安装命令行工具
终端输入：
xcode-select –install
第二步，安装homebrew
详参此链接：Mac系统HomeBrew安装过程
第三步，安装ruby环境
1.终端执行这句指令：
brew install ruby
2.如果终端出现以下内容说明安装成功，但是还需要下一步设置路径问题
3.下一步配置路径问题，在终端输入以下内容：
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.zshrc
4.然后终端输入以下内容，
ruby --version
6.然后关闭终端，重启
第四步，更换ruby为国内镜像
1.先查看当前系统的ruby环境，在终端输入以下内容
gem sources -l
2.默认环境是(我没记错的话，因为我的已经是更换过的了)
*** CURRENT SOURCES ***
https://rubygems.org
3.先将系统中默认的ruby环境移除，在终端输入以下内容：
gem source -r https://rubygems.org
4.然后添加国内镜像，终端继续输入：
gem source -a https://gems.ruby-china.com
5.然后终端再输入：gem sources -l，出现以下内容就ok了
6.终于可以下一步了，累鼠了。。
第五步，终于可以开始安装cocoapods辣！
1.终端输入：
gem install cocoapods --user-install
2.然后会出现以下内容：
WARNING: You don't have /Users/你的电脑用户名/.gem/ruby/2.6.0/bin in your PATH,
gem executables will not run.
Successfully installed rexml-3.2.6
Successfully installed nanaimo-0.3.0
Successfully installed colored2-3.1.2
Successfully installed claide-1.1.0
Successfully installed atomos-0.1.3
Successfully installed xcodeproj-1.22.0
Successfully installed ruby-macho-2.5.1
Successfully installed nap-1.1.0
Successfully installed molinillo-0.8.0
Successfully installed gh_inspector-1.1.3
Successfully installed fourflusher-2.3.1
Successfully installed escape-0.0.4
Successfully installed cocoapods-try-1.2.0
Successfully installed netrc-0.11.0
Successfully installed cocoapods-trunk-1.6.0
Successfully installed cocoapods-search-1.0.1
Successfully installed cocoapods-plugins-1.0.0
Successfully installed cocoapods-downloader-1.6.3
Successfully installed cocoapods-deintegrate-1.0.5
Building native extensions. This could take a while...
Successfully installed ffi-1.15.5
Successfully installed ethon-0.16.0
Successfully installed typhoeus-1.4.0
Successfully installed public_suffix-4.0.7
Successfully installed fuzzy_match-2.0.4
Successfully installed concurrent-ruby-1.2.2
Building native extensions. This could take a while...
Successfully installed json-2.6.3
Successfully installed httpclient-2.8.3
A new major version is available for Algolia! Please now use the https://rubygems.org/gems/algolia gem to get the latest features.
Successfully installed algoliasearch-1.27.5
Successfully installed addressable-2.8.5
Successfully installed zeitwerk-2.6.11
Successfully installed tzinfo-2.0.6
Successfully installed minitest-5.19.0
Successfully installed i18n-1.14.1
Successfully installed activesupport-6.1.7.4
Successfully installed cocoapods-core-1.12.1
Successfully installed cocoapods-1.12.1
Parsing documentation for rexml-3.2.6
Installing ri documentation for rexml-3.2.6
Parsing documentation for nanaimo-0.3.0
Installing ri documentation for nanaimo-0.3.0
Parsing documentation for colored2-3.1.2
Installing ri documentation for colored2-3.1.2
Parsing documentation for claide-1.1.0
Installing ri documentation for claide-1.1.0
Parsing documentation for atomos-0.1.3
Installing ri documentation for atomos-0.1.3
Parsing documentation for xcodeproj-1.22.0
Installing ri documentation for xcodeproj-1.22.0
Parsing documentation for ruby-macho-2.5.1
Installing ri documentation for ruby-macho-2.5.1
Parsing documentation for nap-1.1.0
Installing ri documentation for nap-1.1.0
Parsing documentation for molinillo-0.8.0
Installing ri documentation for molinillo-0.8.0
Parsing documentation for gh_inspector-1.1.3
Installing ri documentation for gh_inspector-1.1.3
Parsing documentation for fourflusher-2.3.1
Installing ri documentation for fourflusher-2.3.1
Parsing documentation for escape-0.0.4
Installing ri documentation for escape-0.0.4
Parsing documentation for cocoapods-try-1.2.0
Installing ri documentation for cocoapods-try-1.2.0
Parsing documentation for netrc-0.11.0
Installing ri documentation for netrc-0.11.0
Parsing documentation for cocoapods-trunk-1.6.0
Installing ri documentation for cocoapods-trunk-1.6.0
Parsing documentation for cocoapods-search-1.0.1
Installing ri documentation for cocoapods-search-1.0.1
Parsing documentation for cocoapods-plugins-1.0.0
Installing ri documentation for cocoapods-plugins-1.0.0
Parsing documentation for cocoapods-downloader-1.6.3
Installing ri documentation for cocoapods-downloader-1.6.3
Parsing documentation for cocoapods-deintegrate-1.0.5
Installing ri documentation for cocoapods-deintegrate-1.0.5
Parsing documentation for ffi-1.15.5
Installing ri documentation for ffi-1.15.5
Parsing documentation for ethon-0.16.0
Installing ri documentation for ethon-0.16.0
Parsing documentation for typhoeus-1.4.0
Installing ri documentation for typhoeus-1.4.0
Parsing documentation for public_suffix-4.0.7
Installing ri documentation for public_suffix-4.0.7
Parsing documentation for fuzzy_match-2.0.4
Installing ri documentation for fuzzy_match-2.0.4
Parsing documentation for concurrent-ruby-1.2.2
Installing ri documentation for concurrent-ruby-1.2.2
Parsing documentation for json-2.6.3
Installing ri documentation for json-2.6.3
Parsing documentation for httpclient-2.8.3
Installing ri documentation for httpclient-2.8.3
Parsing documentation for algoliasearch-1.27.5
Installing ri documentation for algoliasearch-1.27.5
Parsing documentation for addressable-2.8.5
Installing ri documentation for addressable-2.8.5
Parsing documentation for zeitwerk-2.6.11
Installing ri documentation for zeitwerk-2.6.11
Parsing documentation for tzinfo-2.0.6
Installing ri documentation for tzinfo-2.0.6
Parsing documentation for minitest-5.19.0
Installing ri documentation for minitest-5.19.0
Parsing documentation for i18n-1.14.1
Installing ri documentation for i18n-1.14.1
Parsing documentation for activesupport-6.1.7.4
Installing ri documentation for activesupport-6.1.7.4
Parsing documentation for cocoapods-core-1.12.1
Installing ri documentation for cocoapods-core-1.12.1
Parsing documentation for cocoapods-1.12.1
Installing ri documentation for cocoapods-1.12.1
Done installing documentation for rexml, nanaimo, colored2, claide, atomos, xcodeproj, ruby-macho, nap, molinillo, gh_inspector, fourflusher, escape, cocoapods-try, netrc, cocoapods-trunk, cocoapods-search, cocoapods-plugins, cocoapods-downloader, cocoapods-deintegrate, ffi, ethon, typhoeus, public_suffix, fuzzy_match, concurrent-ruby, json, httpclient, algoliasearch, addressable, zeitwerk, tzinfo, minitest, i18n, activesupport, cocoapods-core, cocoapods after 47 seconds
36 gems installed
3.此步骤虽然安装成功了cocoapods，但是pod命令是不好用的，如果不信叛逆的你可以试着输入 pod --version试试，会不会出现这个，我就是这一步排雷好久啊
sh: command not found: pod
4.为了让pod听从指挥，请在终端输入以下路径配置:
PATH="`ruby -e 'puts Gem.user_dir'`/bin:$PATH"
5.然后再在终端输入:
gem install cocoapods --user-install
大功已成！！！
6.可以试试输入启动"pod setup"命令，会出现绿油油的一行小字，真清爽舒适的颜色！！
接下来就可以想干嘛干嘛辣，管理你得第三方库辣
如果铁铁们还有遇到其他的问题留言大家一起🍑
**注意
在项目中pod install 之后 会出现以下问题
[!] CDN: trunk URL couldn‘t be downloaded: https://raw.githubusercontent.com/CocoaPods/Specs/master/
解决思路详参(亲测有效)：在podfile文件中添加指定的spec repo源
