Gem安装错误：‘请至少指定一个gem名称’

Question

例如，当我运行'gem install bundler‘时，如果我运行的是ruby版本1.9.3，它工作得很好，但是当我运行ruby 2.1.2时，它似乎看不到'bundler’arg并给出了

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

我在两个运行rbenv的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)

有什么建议可能出问题了吗？

Answer 1

将我的~/.gemrc从

gem: --document

至

gem:  --ri-document

这就解决了问题。不确定为什么ruby 1.9.3没有问题。

Answer 2

1. 尝试卸载所有** $ sudo gem uninstall --所有**

2.尝试安装ruby

** $ sudo gem安装ruby**

然后安装cocoapods，然后安装

1. ，然后完美工作$ sudo gem安装cocoapods