install rvm
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3/curl -sSL https://get.rvm.io | bash -s stable --railssource ~/.rvm/scripts/rvm以上就安装好rvm了,接着安装ruby
rvm install 2.4这是安装了ruby2.4
rvm use 2.4使用ruby2.4
install jekeyll
gem install jekyll新闻热点
疑难解答