Ruby on Rails, could not find a valid gem 'rails'

Question

I installed ruby and updated ruby gems, now I want to download rails 3.2.13. I write gem install rails -v 3.2.13 (I need this version) I have this error

ERROR:         


        

Answer 1

I had the same problem but turns out I had a proxy setup but I was trying to download gems from a proxyless network

First, Detect if you have any proxy setup. Do

env | grep -i proxy

If this command prints something on STDOUT on the terminal e.g. in my case

http_proxy=http://proxy.abcde.ac.za:80/
https_proxy=https://proxy.abcde.ac.za:80/

Do

unset http_proxy
unset https_proxy

This unsets the proxy environment variables to null so when you do env | grep -i proxy there should be no output.

Now run

gem install [gemname]