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1.安装Rails提示 file ‘lib‘ not found
一般是安装文档时出错,可以无视,或者执行 :gem install rdoc 重新安装文档
2.运行rails s 提示:/var/lib/gems/1.9.1/gems/execjs-2.5.2/lib/execjs/runtimes.rb:48:in `autodetect‘: Could not find a JavaScript runtime.
尝试 :sudo apt-get install nodejs
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原文地址:http://www.cnblogs.com/makeup1122/p/Ruby.html