Jekyll Rake task for making a new post

Rakefile

desc 'creates a new post prefixed with the current date'
task :post, :name, :title, :categories do |task, args|
  File.open(File.join('_posts', Time.now.strftime("%Y-%m-%d-#{args[:name].split(' ').join('-')}.markdown")), 'w') do |file|
    file << <<-DOC
---
layout: post
title: "#{args[:title].downcase}"
date: #{Time.now.strftime("%Y-%m-%d-%H:%M:%S")}
categories: #{args[:categories].downcase}
---
    DOC
  end
end

usage: rake 'post[the learning tree, the learning tree, learning development]'

rake -T #=> rake post[name,title,categories] # creates a new post prefixed with the current date