ruby-on-rails - rvm gem 安装错误？

Question

我在摆弄 ruby​​gems 和 rvm，它工作得很好，但现在当我尝试安装 gem 时出现错误

gem install railsERROR: While executing gem ... (Errno::EACCES) Permission denied - /Users/da/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.11/.gitignore

当我执行 sudo 时它会起作用，但我以前从来不需要这样做来安装 gem。

$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.6.2
  - RUBY VERSION: 1.9.2 (2011-02-18 patchlevel 180) [x86_64-darwin10.7.0]
  - INSTALLATION DIRECTORY: /Users/da/.rvm/gems/ruby-1.9.2-p180
  - RUBY EXECUTABLE: /Users/da/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/da/.rvm/gems/ruby-1.9.2-p180/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-10
  - GEM PATHS:
     - /Users/da/.rvm/gems/ruby-1.9.2-p180
     - /Users/da/.rvm/gems/ruby-1.9.2-p180@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - http://rubygems.org/
$ sudo gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.6.2
  - RUBY VERSION: 1.9.2 (2011-02-18 patchlevel 180) [x86_64-darwin10.7.0]
  - INSTALLATION DIRECTORY: /Users/da/.rvm/gems/ruby-1.9.2-p180
  - RUBY EXECUTABLE: /Users/danest/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/da/.rvm/gems/ruby-1.9.2-p180/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-10
  - GEM PATHS:
     - /Users/da/.rvm/gems/ruby-1.9.2-p180
     - /Users/da/.rvm/gems/ruby-1.9.2-p180@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - http://rubygems.org/

Answer 1

看起来您已经将 root 用户设置为使用位于您的主文件夹中的 rvm install。这意味着当您使用 sudo 安装 gem 时，文件将属于 root。因此，当您尝试安装 gem 时，您会遇到权限错误。

要修复，您需要将 rvm 文件夹返回给您(我假设，根据您的文件路径，您的用户名在这里是“da”)...

sudo chown -R da:da /Users/da/.rvm

为了避免将来发生这种情况，我建议将 root 的路径设置为其自己安装的 rvm 或系统 gems。