如何修復損壞的系統 Ruby 安裝

Question

我的Mac系統Ruby安裝徹底壞了。

我看過幾篇推薦我設置 RVM 或 rbenv 的帖子，但我正在嘗試安裝 Xcode 吊艙（cocoapods），我不知道為什么我的系統 Ruby 如此損壞。

當我運行gem時，我得到以下 output：

NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/coffee-script-source-1.11.1.gemspec:16.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/em-websocket-0.5.1.gemspec:15.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/escape-0.0.4.gemspec:18.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/fuzzy_match-2.0.4.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/i18n-0.9.5.gemspec:17.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/gems/2.3.0/specifications/nokogiri-1.5.6.gemspec:22.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/rouge-2.2.1.gemspec:18.
NOTE: Gem::Specification#rubyforge_project= is deprecated with no replacement. It will be removed on or after 2019-12-01.
Gem::Specification#rubyforge_project= called from /Library/Ruby/Gems/2.3.0/specifications/sass-3.7.4.gemspec:21.
RubyGems is a sophisticated package manager for Ruby.  This is a
basic help message containing pointers to more information.

似乎這些只是棄用警告，並且從其他一些帖子中，答案是簡單地運行gem pristine --all --no-extensions 。

當我基本上運行任何gem命令時，我得到一個權限錯誤：

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/gems/2.3.0 directory.

如何重置我的系統 Ruby？ 我不使用 Ruby 並且我昨天運行了命令gem install cocoapods 。 從那以后它就無法使用了。

Answer 1

請注意，基本上您應該使用 rbenv 之類的工具自己安裝rbenv ，但是如果您不想這樣做，請參考下面的答案。

---

系統 Ruby 安裝為root ，因此您需要sudo命令與之交互。 嘗試sudo gem install cocoapods 。

（順便說一句，沒有子命令的gem命令只顯示用法，沒有損壞）