Can I install gems with apt-get on Ubuntu?

Question

I am new to Ruby and just diving in. The Ruby tutorial says I should get the packaging system from here: http://rubyforge.org/frs/?group_id=126

I am on Ubuntu Linux. The

Answer 1

Ubuntu now have rubygems as a package

For Ubuntu 12:

sudo apt-get install rubygems

For Ubuntu 14.04:

sudo apt-get install rubygems-integration

Answer 2

If you install the full ruby application set with

sudo apt-get install ruby-full

You will get gems and much more by default. Tested on Ubuntu 16, it could also work on other version.

Answer 3

First, download *.tar file, unpack this file, then go to rubygems directory in your console, and type

ruby setup.rb

That's it :)

Answer 4

On Ubuntu 16.04 and Ubuntu 18.04, both sudo apt-get install rubygems and sudo apt-get install rubygems-integration failed for me. Instead, I had to do this:

sudo apt-get install ruby-dev

Answer 5

For me in Ubuntu 20.04 I did 3 things to create a new Ruby and Rails app.

1. Install Ruby development version

sudo apt install ruby-dev

2. Install rails from gem

sudo gem install rails 

3. Create new application

rails new blog

I got error while installing rails(sudo apt install rails) only, So I installed devlopment version. I got permission related error while not using Sudo as well while installing gems and rails.

Answer 6

If on Ubuntu 14.04 try below

sudo apt-get install rubygems-integration