Richard Worrall rwrrll

🎨 when improving the format/structure of the code
🚀 when improving performance
✏️ when writing docs
💡 new idea
🚧 work in progress
➕ when adding feature
➖ when removing feature
🔈 when adding logging
🔇 when reducing logging
🐛 when fixing a bug

Generating a self signed SSL certificate

Creates a resulting server.crt certificate and server.key private key.

Method one

$ openssl genrsa -des3 -out server.key.tmp 1024
- Note: Enter a dummy pass pharse (e.g. 1234) and remember it
$ openssl rsa -in server.key.tmp -out server.key
- Enter dummy pass pharse from previous step
Generate certificate request file (CSR)
$ openssl req -new -key server.key -out server.csr

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

ruby-1.9.3-p327 cumulative performance patch for rbenv

This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.

Requirements

You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.

	$ heroku config:set MAGICK_MAP_LIMIT=32MiB
	Setting MAGICK_MAP_LIMIT and restarting ⬢ radiant-waters-37422... done, v46
	MAGICK_MAP_LIMIT: 32MiB

	$ heroku config:set MAGICK_MEMORY_LIMIT=16MiB
	Setting MAGICK_MEMORY_LIMIT and restarting ⬢ radiant-waters-37422... done, v47
	MAGICK_MEMORY_LIMIT: 16MiB

	$ heroku run identify -list resource
	Running identify -list resource on ⬢ radiant-waters-37422... up, run.5905 (Hobby)

	require 'nokogiri'
	require 'open-uri'
	require 'json'

	doc = Nokogiri::HTML(open('http://www.mysupermarket.co.uk/asda-compare-prices/Spirits/Havana_Club_Rum_Anejo_7_Year_Old_700ml.html'))
	prices = doc.css('#PriceComparison .StoreDiv').map {\|c\| { name: c.css('.ImgSpan img').first['alt'], cheapest: c['class'].include?('Cheapest'), price: c.css('.Price>span.priceClass, .Price>span.Offer').text.strip } }

	# => [{:name=>"ASDA", :cheapest=>true, :price=>"£18.00"},
	# {:name=>"Tesco", :cheapest=>false, :price=>"£23.30"},
	# {:name=>"Ocado", :cheapest=>false, :price=>"£23.30"},

	/**
	* IE 5.5+, Firefox, Opera, Chrome, Safari XHR object
	*
	* @param string url
	* @param object callback
	* @param mixed data
	* @param null x
	*/
	function ajax(url, callback, data, x) {
	try {

	#!/bin/sh

	. ramdisk.sh
	. mysql-spawn.sh
	. postgres-spawn.sh
	. mysql-start.sh
	. postgres-start.sh
	sleep 1
	. createdbs.sh
	. jenkins-start.sh

	#!/bin/bash

	# Create the directory structure
	mkdir -p features/step_definitions
	mkdir -p features/support

	# Create a placeholder for the step_definitions folder
	touch features/step_definitions/"$(basename `pwd`)_steps.rb"

	# Create the environment file

	property baseURL : "http://statusboard.dev/song?"

	if application "Spotify" is running then
	tell application "Spotify"
	set theTrack to name of the current track
	set theArtist to artist of the current track
	set theAlbum to album of the current track
	set theurl to spotify url of the current track
	try
	do shell script "/usr/local/bin/wget --delete-after \"" & baseURL & "&t=" & theTrack & "&a=" & theArtist & "&al=" & theAlbum & "\""