macOS:12.2 cocoapods版本：1.10.1 ruby：2.7.0
安裝最新版cocoapods時，pod install時出現下列問題:
/Library/Ruby/Gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/multibyte/unicode.rb:123:in `normalize': undefined method `squish' for #<String:0x00007fe91b0712a8> (NoMethodError)
愿意時需要升級Ruby，系統默認的是2.6.3
嘗試用RVM升級Ruby
http://blog.csdn.net/lissdy/article/details/9191351
如果碰到下面問題
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.11/x86_64/ruby-2.2.4.
Continuing with compilation. Please read ‘rvm help mount‘ to get more information on binary rubies.
Checking requirements for osx.
Installing requirements for osx.
Updating system.......
Error running ‘requirements_osx_brew_update_system ruby-2.2.4‘,
先運行下面命令，再安裝：
rvm autolibs read-only
1、需要提前安裝homebrew、RVM、Ruby等；步驟可以百度；當安裝rvm時會出現Warning! PATH is not properly set up, /Users/ios-oc/Software/ruby/bin is not at first place. ?的問題是因為輸入了rvm 的操作 ；
下載ruby的時候會提示去一個log文件里查看失敗信息 其中包含cannot load such file -- openssl (LoadError)；
這時候需要重新去下載OpenSSL ：終端操作：% rvm pkg install openssl? ? 首先需要下載openssl，提示成功后輸入?
rvm reinstall ruby-2.7.0 --with-openssl-dir=$rvm_path/usr
可以選擇自己想要下載的ruby版本 ruby -v 查看版本；
2、這時，輸入pod -v 提示：
Traceback?(most recent call last):
2: from /usr/local/bin/pod:23:in `<main>'
1: from /Library/Ruby/Site/2.6.0/rubygems.rb:300:in `activate_bin_path'
/Library/Ruby/Site/2.6.0/rubygems.rb:281:in `find_spec_for_exe':?can't find gem cocoapods (>= 0.a) with executable pod (Gem::GemNotFoundException)
需要輸入：rvm get stable?
最后安裝cocoapods：gem install cocoapods ? 安裝成功。
ps：路徑：/user/ios-oc(本機地址)/.bash_profile;
sudo chmod -R +rx /usr/bin ? ?添加讀寫權限
徹底刪除cocoapods:sudo gem uninstall -n /usr/local/bin cocoapods
顯示隱藏文件命令行：https://blog.csdn.net/qq_32666701/article/details/80607646?；
1、期間在.bash_profile文件中 增加了export PATH="/usr/local/opt/ruby/bin:$PATH" ?還有兩行不確定是否添加我全部貼出來了：
[[ -s "$HOME/.profile" ]] && source "$HOME/.profile" # Load the default .profile
export GEM_HOME=$HOME/Software/ruby
export PATH=PATH:PATH:HOME/Software/ruby/bin
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
export PATH="/usr/local/opt/ruby/bin:$PATH"
2、.bashrc文件如下：
# Add RVM to PATH for scripting. Make sure this is the last PATH variable change.
# Add RVM to PATH for scripting. Make sure this is the last PATH variable change.
# Add RVM to PATH for scripting. Make sure this is the last PATH variable change.
# Add RVM to PATH for scripting. Make sure this is the last PATH variable change.
# Add RVM to PATH for scripting. Make sure this is the last PATH variable change.
# for brew install
export PATH=/usr/local/bin:$PATH
# Add RVM to PATH for scripting. Make sure this is the last PATH variable change.
export PATH=/usr/bin/ruby:$PATH
還有最后借鑒：https://www.wddsss.com/main/displayArticle/230下面是內容：
首先需要在 Mac 中安裝 Ruby 環境rvm
1： 安裝rvm 和nvm類似，用于管理Ruby的版本
curl-sSL https://get.rvm.io | bash -s stable
2: 下載成功后設置環境變量
source~/.rvm/scripts/rvmrvm-v //檢查是否設置成功
3: 設置Ruby china鏡像
echo"ruby_url=https://cache.ruby-china.org/pub/ruby"> ~/.rvm/user/db
安裝 Ruby
1: 查詢可安裝版本
rvmlist known
當前最新版本為 2.7.0
2: 開始安裝
rvminstall2.7.0
3: 檢驗安裝
ruby-v
安裝cocoaPods
1: 開始安裝
geminstall cocoapods
2: 檢驗安裝
pod-v
