我如何检查我的 ubuntu 机器上安装了哪个版本的 rubygems?
答案1
只是一个想法,列出已安装的软件包并 grep ruby 或 gems 或任何其他东西:)
dpkg --get-selections
答案2
或gem -v
都会gem --version
输出版本号。
了解更多信息:
$ gem -h
RubyGems is a sophisticated package manager for Ruby. This is a
basic help message containing pointers to more information.
Usage:
gem -h/--help
gem -v/--version
gem command [arguments...] [options...]
Examples:
gem install rake
gem list --local
gem build package.gemspec
gem help install
Further help:
gem help commands list all 'gem' commands
gem help examples show some examples of usage
gem help platforms show information about platforms
gem help <COMMAND> show help on COMMAND
(e.g. 'gem help install')
gem server present a web page at
http://localhost:8808/
with info about installed gems
Further information:
http://rubygems.rubyforge.org
我在另一个问题上看到,你的 gem 应用程序坏了。并且你已使用 更新了它gem update --system
。如果是这种情况,你可以查看/usr/lib/ruby/gems/1.8/gems/rubygems-update-x.x.x
并获取 xxx 值最高的目录