ruby-on-rails - 在 ubuntu 12.04 aws ec2 上安装 gem 时出错

Question

我在 AWS EC2 中获得了一个 Ubuntu 12.04 实例。
我只想安装 rails。
但它显示此错误消息。
这是由于sudo gem env 之间的gem env 不同造成的吗？
除了 rvm implode 有什么方法可以解决这个问题吗？
改用 rvmsudo 有什么风险？

Fetching: atomic-1.1.15.gem (100%)
ERROR:  While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /usr/local/rvm/gems/ruby-1.9.3-p545@global directory.

gem 环境:

RubyGems Environment:
  - RUBYGEMS VERSION: 2.2.2
  - RUBY VERSION: 1.9.3 (2014-02-24 patchlevel 545) [x86_64-linux]
  - INSTALLATION DIRECTORY: /usr/local/rvm/gems/ruby-1.9.3-p545@global
  - RUBY EXECUTABLE: /usr/local/rvm/rubies/ruby-1.9.3-p545/bin/ruby
  - EXECUTABLE DIRECTORY: /usr/local/rvm/gems/ruby-1.9.3-p545@global/bin
  - SPEC CACHE DIRECTORY: /home/ubuntu/.gem/specs
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /usr/local/rvm/gems/ruby-1.9.3-p545@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /usr/local/rvm/gems/ruby-1.9.3-p545@global/bin
     - /usr/local/rvm/rubies/ruby-1.9.3-p545/bin
     - /usr/local/sbin
     - /usr/local/bin
     - /usr/sbin
     - /usr/bin
     - /sbin
     - /bin
     - /usr/games
     - /usr/local/rvm/bin

须藤 gem 环境:

RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.15
  - RUBY VERSION: 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
  - INSTALLATION DIRECTORY: /var/lib/gems/1.8
  - RUBY EXECUTABLE: /usr/bin/ruby1.8
  - EXECUTABLE DIRECTORY: /usr/local/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /var/lib/gems/1.8
     - /home/ubuntu/.gem/ruby/1.8
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
     - http://rubygems.org/

Answer 1

rvm 可以在没有 sudo 或特定/sudo 权限的情况下使用。重新安装将不胜感激。清理当前的 rvm 安装
rvmsudo rvm 内爆
sudo rm -rf/etc/rvmrc/etc/profile.d/rvm.sh/usr/local/rvm
然后关闭所有控制台/bashes/terminales 并使用您想要使用 rvm 的用户再次登录并再次安装它。