2015-02-10-welcome-to-jekyll.markdown

layout	title	date	categories	tags	excerpt	mathjax
post	hello jekyll!	2015-02-10 07:14:54 -0800	jekyll	jekyll	当年创建 jekyll 时默认的一篇文章，没什么意义，我也一直没删除，留个纪念吧。	true

You’ll find this post in your _posts directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run jekyll serve, which launches a web server and auto-regenerates your site when a file is updated.

To add new posts, simply add a file in the _posts directory that follows the convention YYYY-MM-DD-name-of-post.ext and includes the necessary front matter. Take a look at the source for this post to get an idea about how it works.

Jekyll also offers powerful support for code snippets:

def print_hi(name)
  puts "Hi, #{name}"
end
print_hi('Tom')
#=> prints 'Hi, Tom' to STDOUT.

Check out the Jekyll docs for more info on how to get the most out of Jekyll. File all bugs/feature requests at Jekyll’s GitHub repo. If you have questions, you can ask them on Jekyll’s dedicated Help repository.

Block Mathjax

$$ f(x) = ax + b $$

Inline Mathjax $a \neq b$