step1. 先更新系统

sudo apt update
sudo apt upgrade

step2. 安装ruby

sudo apt install ruby
sudo apt install ruby-dev

step3. 更换Gems源

gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/

step4. 更新Gem源

gem sources -u

step5. 安装jekyll

sudo gem install jekyll

step6. 新建项目文件夹

jekyll new myblog

如果出现ERROR，用以下命令解决

sudo gem install jekyll bundler

step7. 运行

cd myblog
jekyll serve

step8. 浏览器查看

http://localhost:4000