I am trying to get Jekyll running but I have no experience with Ruby.
As far as I can tell the installation of Jekyll has succeeded.
However:
$ jekyll
>
Maybe a little late, but...
I had some trouble to install Jekyll on Ubuntu and tried everything that people answered in this thread - unfortunately nothing worked.
Then, I watched a video on Jekyll's site and after installing the whole ruby package again, sudo gem install jekyll
worked.
Try it before anything else:
sudo apt-get update
sudo apt-get install ruby-full
sudo gem install jekyll
jekyll -v
It seems pretty simple, but it works on Ubuntu.