# apt-get install ruby1.9.1-dev
$ gem install --user jekyll
# update-alternatives --install /usr/bin/ruby ruby /usr/bin/ruby2.0 1
update-alternatives: using /usr/bin/ruby2.0 to provide /usr/bin/ruby (ruby) in auto mode
$ curl -sSL https://rvm.io/mpapis.asc | gpg --import -
$ curl -L https://get.rvm.io | bash -s stable --rails
$ source "$HOME/.rvm/scripts/rvm"
$ rvm requirements
$ gem install jekyll