Ruby gem 权限被拒绝 /var/lib/gems 使用 Ubuntu
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Ruby gem permission denied /var/lib/gems using Ubuntu
提问by Yannick
I'm trying to install Rails using Gem and did the following from the terminal:
我正在尝试使用 Gem 安装 Rails，并从终端执行以下操作：
sudo apt-get install ruby-full build-essential
sudo apt-get install rubygems
export PATH=/var/lib/gems/1.8/bin:$PATH
gem install rails
Then I get the following message:
然后我收到以下消息：
ERROR: While executing gem ... (Errno:EACCES) Permission denied - /var/lib/gems
错误：执行 gem 时...（错误：EACCES）权限被拒绝 - /var/lib/gems
I've followed the instruction from Ubuntu Help Guide& I'm using Oracle VM VirtualBox to run Ubuntu under Windows 7 and have RubyGems v1.8.15.
我已按照Ubuntu 帮助指南中的说明进行操作，我正在使用 Oracle VM VirtualBox 在 Windows 7 下运行 Ubuntu 并拥有 RubyGems v1.8.15。
回答by Linuxios
You need to prefix the gemcommand with sudobecause /var/lib/gemsis owned by root. You could also take a look at RVMwhich allows reallyeasy installation and management of gems and Ruby versions. Best part, it's all in your home dir!
您需要在gem命令前加上sudo因为/var/lib/gems是由root. 您还可以查看RVM，它允许真正轻松地安装和管理 gems 和 Ruby 版本。最好的部分，这一切都在您的家庭目录中！
EDIT: per @AndrewMarshall's comment bellow, rbenv is an alternative to RVM.
编辑：根据@AndrewMarshall 的评论，rbenv 是 RVM 的替代品。
