本文介绍了当前未安装程序“rails"?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已经安装了 Ruby(通过 apt-get 安装了 1.8.7)并安装了 Rails(通过 rubygems 安装了 2.3.2)，但是当我输入rails newapp"时，我收到了这个错误:
I've installed Ruby (1.8.7 via apt-get) and I installed Rails (2.3.2 via rubygems) but when I type 'rails newapp', I get this error:
The program 'rails' is currently not installed. You can install it by typing: sudo apt-get install rails
rails: command not found
当我运行gem list"时，它会显示 rails 及其所有依赖项.知道可能出了什么问题吗?
When I run 'gem list' it shows rails and all of it's dependencies. Any idea what might have gone wrong?
推荐答案
你是如何安装 rubygems 的?我过去在通过 ubuntu 存储库使用它时发现了问题.通常我删除那个包并编译和安装
How did you install rubygems? I've found problems when using it through the ubuntu repositories in the past. Usually I remove that package and compile and install
sudo apt-get remove rubygems
wget http://rubyforge.org/frs/download.php/70696/rubygems-1.3.7.tgz
tar xzvf rubygems-1.3.7.tgz
cd rubygems-1.3.7/
sudo ruby setup.rb
sudo ln -s /usr/bin/gem1.8 /usr/bin/gem
或者你可能只需要符号链接它:
or you may just have to symbolic link it:
sudo ln -s /usr/bin/gem1.8 /usr/bin/gem
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