尝试安装gem，/Library/Ruby/Gems/2.0.0目录时没有写入权限。 RVM已安装

Question

只想学习如何处理所有这些宝石，并且在使用'gem install x'安装任何东西时遇到问题。我到处都看到它不是使用'sudo'的最佳做法。

-facts-

创业板安装黄瓜回报 'You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.'

其中宝石返回/usr/bin/gem

宝石ENV返回

RubyGems Environment: 
    - RUBYGEMS VERSION: 2.0.14.1 
    - RUBY VERSION: 2.0.0 (2015-12-16 patchlevel 648) [universal.x86_64-darwin16] 
    - INSTALLATION DIRECTORY: /Library/Ruby/Gems/2.0.0 
    - RUBY EXECUTABLE: /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby 
    - EXECUTABLE DIRECTORY: /usr/local/bin 
    - RUBYGEMS PLATFORMS: 
    - ruby 
    - universal-darwin-16 
    - GEM PATHS: 
    - /Library/Ruby/Gems/2.0.0 
    - /Users/username/.gem/ruby/2.0.0 
    - /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/gems/2.0.0 
    - GEM CONFIGURATION: 
    - :update_sources => true 
    - :verbose => true 
    - :backtrace => false 
    - :bulk_threshold => 1000 
    - "gem" => "--no-ri --no-rdoc" 
    - REMOTE SOURCES: 
    - https://rubygems.org/ 

我已经安装了RVM但回报 -

No rvm rubies installed yet. Try 'rvm help install'

不知道该怎么做，将不胜感激帮助。

Answer 1

您需要root /管理员权限才能写入/及其子目录。不使用sudo或su就不能安装任何东西。您的问题或类似问题在此处得到解答：Installing gem or updating RubyGems fails with permissions error