Gem ::安装错误

Question

当我尝试清理我的rails版本时 sudo gem cleanup rails

我收到以下错误:

Cleaning up installed gems...
Attempting to uninstall rails-2.3.5
Unable to uninstall rails-2.3.5:
Gem::InstallError: cannot uninstall, check `gem list -d rails`
Attempting to uninstall rails-1.2.6
Unable to uninstall rails-1.2.6:
Gem::InstallError: cannot uninstall, check `gem list -d rails`

gem list -d rails 结果是:

rails (2.3.8, 2.3.5, 1.2.6)
  Author: David Heinemeier Hansson
  Rubyforge: http://rubyforge.org/projects/rails
  Homepage: http://www.rubyonrails.org
  Installed at (2.3.8): /Library/Ruby/Gems/1.8
               (2.3.5): /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8
               (1.2.6): /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8

  Web-application framework with template engine, control-flow layer,
  and ORM.

谁知道什么是错的？

Answer 1

经过一些长时间的搜索后发现原因是由于路径不存在.无法卸载因为系统没有搜索/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8

在粒度级别上gem cleanup rails,您只需使用uninstall命令并键入:

gem uninstall rails -i /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8

然后,您可能会遇到与不存在的路径相关的另一个问题,此时,您应该使用以下命令创建目录:

mkdir /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/bin

现在所有卸载都应该运行良好.我建议通过执行以下功能来重新安装一个干净的宝石:

创建所有现有宝石的列表

gem list --no-versions | sed -e '/^(*|$)/d' > installed_gems

卸载所有现有的宝石

gem list | cut -d" " -f1 | xargs gem uninstall -aIx

重新安装最新的宝石

cat installed_gems | xargs sudo gem install