Debian 7 Wheezy 64bits

Installation instructions

wget -qO- https://dl.packager.io/srv/dxhost/jekyll-bin/key | sudo apt-key add -
sudo wget -O /etc/apt/sources.list.d/jekyll-bin.list \
  https://dl.packager.io/srv/dxhost/jekyll-bin/v2.5.3-ruby2.2.0/installer/debian/7.repo
sudo apt-get update
sudo apt-get install jekyll-bin

Note: You might need to apt-get install wget apt-transport-https for the above instructions to work.

More details can be found at http://www.wepoca.net/howto/how-to-install-jekyll-from-binaries/ .