check which version of rubygems installed on ubuntu?

Question

How do I check which version of rubygems i have installed on my ubuntu box?

chmeee · Answer 1 · 2010-03-24T13:33:54.150

Either gem -v or gem --version would output the version number.

For more information:

$ 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

I've seen on another question that you have the gem app broken. And that you have updated it with gem update --system. If this is the case, you can look on /usr/lib/ruby/gems/1.8/gems/rubygems-update-x.x.x and take the directory with the highest value of x.x.x.

score 1 · Accepted Answer · answered Mar 24 '10 at 13:14

1

Just an idea, list the installed packages and grep for ruby or gems or whatever :)

dpkg --get-selections

answered Mar 24 '10 at 13:14

Wouldn't it be better to ask for a specific package? Like `dpkg -l rubygems` – ptman Mar 24 '10 at 13:44
What if you don't know the package name ? does this work : dpkg -l \*ruby\* ? – Mar 24 '10 at 13:49
1

@user123456 `dpkg -l | grep ruby` would work in that instance. – voretaq7 Jul 26 '12 at 01:05

check which version of rubygems installed on ubuntu?

2 Answers2