new_post.rb

#!/usr/bin/env ruby
require "pathname"

unless ARGV[0]
  puts 'Usage: newpost "the post title"'
  exit(-1)
end

date_prefix = Time.now.strftime("%Y-%m-%d")
postname = ARGV[0].strip.downcase.gsub(/ /, '-')
post = Pathname(__FILE__).dirname + "_posts" + "#{date_prefix}-#{postname}.md"


header = <<-END
---
date: #{Time.new.strftime('%F %T')}
title: #{ARGV[0]}
layout: post
tags:
    -
categories:
    -
---

END

File.open(post, 'w') do |f|
  f << header
end

system("#{ENV['EDITOR']}", post.to_s)