Jekyll: Install error: jekyll requires Ruby version >= 2.0.0 even though Ruby V2.2 installed

Run the following commands and give me the output please:

dpkg --get-selections | grep -i ruby
ll /usr/{,local/}bin | grep -E 'gem|ruby'

dpkg --get-selections | grep -i ruby
libruby1.9.1                                    install
ruby                                            install
ruby-dev                                        install
ruby1.9.1                                       install
ruby1.9.1-dev                                   install

I updated to Ruby 2 using curl -sSL https://get.rvm.io | bash -s stable --ruby. This seems to have worked since $ ruby -v returns 2.2.1. Sorry, what am I missing.

Ah got it. Turns out I had two version of ruby installed:

sudo ruby -v
ruby 1.9.3p484 (2013-11-22 revision 43786) [x86_64-linux]

ruby -v
ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]

I was trying to instal Jekyll with sudo gem install jekyll if I just installed to my default users (no root) with gem instal jekyll install went fine :-)

Thanks for your help :+1:

@glynhudson You should be able to pull down Ruby2.0 on Ubuntu 14.04. It does this weird thing with 1.9.1 because that was back in the days when Ruby Team did it wrong still so you'll have to select the alternative but at that point Ubuntu will have gem2.0 and ruby2.0 available for you.