Install Ruby:

sudo apt-get install -y build-essential ruby-dev git

Avoid installing RubyGems packages (called gems) as the root user. Set up a gem installation directory for your user account. The following commands will add environment variables to your ~/.bashrc file to configure the gem installation path:

echo 'export GEM_HOME="$HOME/gems"' >> ~/.bashrc
echo 'export PATH="$HOME/gems/bin:$PATH"' >> ~/.bashrc
source ~/.bashrc

Install Jekyll and Bundler:

gem install jekyll bundler

Clone the Beautiful Jekyll repo:

git clone https://github.com/daattali/beautiful-jekyll.git

Navigate to your blog directory and install all dependencies:

cd beautiful-jekyll
bundle install

Run your site locally:

bundle exec jekyll serve
Run Jekyll

You can now view your site at http://localhost:4000.