Ruby Gem安装错误：'；请至少指定一个gem名称'；

例如，当我运行'gem install bundler'时，如果我运行的是ruby 1.9.3版，它就可以正常工作，但是当运行ruby 2.1.2时，它似乎看不到'bundler'参数，并给出了一些提示

ERROR:  While executing gem ... (Gem::CommandLineError)
  Please specify at least one gem name (e.g. gem build GEMNAME)

我在运行rbenv的两个不同系统上看到了这一点

以下是使用RBENV_DEBUG=1运行时输出的最后一部分：

+ [rbenv-exec:45] export PATH=/home/ded/.rbenv/versions/2.1.2/bin:/home/ded/.rbenv  /libexec:/home/ded/.rbenv/plugins/bundler/bin:/home/ded/.rbenv/plugins/ruby-build/bin:.bundle/bin:/home/ded/.rbenv/shims:/home/ded/.rbenv/bin:/home/ded/.cabal/bin:/home/ded/.emacs/ded/lisp/ecukes:/home/ded/local/node/bin:/home/ded/j64-701/bin:/home/ded/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/plan9/bin
+ [rbenv-exec:45] PATH=/home/ded/.rbenv/versions/2.1.2/bin:/home/ded/.rbenv/libexec:/home/ded/.rbenv/plugins/bundler/bin:/home/ded/.rbenv/plugins/ruby-build/bin:.bundle/bin:/home/ded/.rbenv/shims:/home/ded/.rbenv/bin:/home/ded/.cabal/bin:/home/ded/.emacs/ded/lisp/ecukes:/home/ded/local/node/bin:/home/ded/j64-701/bin:/home/ded/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/plan9/bin
+ [rbenv-exec:47] exec -a gem /home/ded/.rbenv/versions/2.1.2/bin/gem install bundler
  ERROR:  While executing gem ... (Gem::CommandLineError)
    Please specify at least one gem name (e.g. gem build GEMNAME)

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有什么问题吗？

将我的~/.gemrc从

gem: --document

到

这就解决了问题。不知道为什么ruby 1.9.3没有问题

尝试卸载所有 **$sudo gem卸载--全部**

2.尝试安装ruby

**$sudogem安装ruby**

然后安装Cocoapod，这样就可以完美地工作了 $sudo gem安装cocoapods

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“邦德”只是你写问题时的一个打字错误吗？是的。抢手货已更正。发现问题：我的~/.gemrc文件中有以下内容：gem:--document这是在gem名称前面插入--document arg，在我的示例中是bundler，并将其作为参数。因此，install命令没有看到gem名称。

gem:  --ri-document