How to upgrade rubygems

RubyGem

Ruby Problem Overview

I need to upgrade gems to 1.8 i tried installing the respective debian packages but it seems its not getting upgraded

anujm@test:~$ dpkg -l |grep -i rubygem
ii  rubygems                               1.3.5-1ubuntu2                                  package management framework for Ruby libraries/applications
ii  rubygems-lwes                          0.8.2-1323277262                                LWES rubygems
ii  rubygems1.8                            1.3.5-1ubuntu2                                  package management framework for Ruby libraries/applications
ii  rubygems1.9                            1.3.5-1ubuntu2                                  package management framework for Ruby libraries/applications
anujm@test:~$ 

    
anujm@test:~$ gem
gem     gem1.8  gem1.9  
anujm@test:~$ sudo gem1.8 install serve
ERROR:  Error installing serve:
        multi_json requires RubyGems version >= 1.3.6
anujm@test:~$

Ruby Solutions

Solution 1 - Ruby

Install rubygems-update

gem install rubygems-update
update_rubygems
gem update --system

run this commands as root or use sudo.

Solution 2 - Ruby

You can update all gems by just performing:

sudo gem update

Solution 3 - Ruby

Or:

gem update `gem outdated | cut -d ' ' -f 1`

Solution 4 - Ruby

I found other answers to be inaccurate/outdated. Best is to refer to the actual documentation.

Short version: in most cases gem update --system will suffice.

You should not blindly use sudo. In fact if you're not required to do so you most likely should not use it.

Solution 5 - Ruby

You can update gem to any specific version like this,

gem update --system 'version'

gem update --system '2.3.0'

Solution 6 - Ruby

I wouldn't use the debian packages, have a look at RVM or Rbenv.

Solution 7 - Ruby

For me it sufficed to simply run

gem update

Solution 8 - Ruby

To update just one gem (and it's dependencies), do:

    bundle update gem-name

But to update just the gem alone (without updating it's dependencies), do

    bundle update --source gem-name

Solution 9 - Ruby

If you're using RVM, the command below helped me a lot when upgrading from a very very old rubygems (eg 1.3.7) that defies the more current update commands mentioned in the other responses in this thread.

rvm rubygems <version>
Categories
Recommended Ruby Solutions
Recommended Gem Solutions

Previous Solution:

Git commit in terminal opens VIM, but can't get back to terminal

GitVimTerminalCommand Line-InterfaceCommit

Next Solution:

Install specific git commit with pip

GitInstallationCommitPip

Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionAnujView Question on Stackoverflow
Solution 1 - RubySacxView Answer on Stackoverflow
Solution 2 - RubyFrankView Answer on Stackoverflow
Solution 3 - Rubyjvc26View Answer on Stackoverflow
Solution 4 - RubythisismydesignView Answer on Stackoverflow
Solution 5 - RubyAravinView Answer on Stackoverflow
Solution 6 - Rubylucas clementeView Answer on Stackoverflow
Solution 7 - RubyKlas MellbournView Answer on Stackoverflow
Solution 8 - RubyKaka RutoView Answer on Stackoverflow
Solution 9 - RubyjanechiiView Answer on Stackoverflow