Anil lakhman

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Introduction

This howto describes installing entware for the Tomato open-source router firmware.

Requirements

USB stick - 1G or more in size
USB-capable router running TomatoUSB.

This Howto Was Tested With

XWindows for Headless Selenium

How to set up a Headless Selenium Testing environment for CentOS 6.3.

On your CentOS 6.3 host

Follow these steps to set up a CentOS 6.3 host to run headless Selenium tests with Firefox.

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \

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:

I have managed to install this… and make it work. I implemented it for Facebook and Google, but you can extend it. My solution it is mostly as described in #116, with a bit of more code presented. The key aspects that lack in the #116 presentation (IMO) are:

the registration as service of your custom FOSUBUserProvider (with the necessary parameters)
set the service for oauth_user_provider in the security.yml with your custom created service

Here are the steps:

Routing. In routing.yml I have added all the routes for both bundles.
Configuration. I have set the config.yml mostly as it is presented in the HWIOAuthBundle.
Security. I have set the security.yml mostly as it is presented in the HWIOAuthBundle (though my routes are using /login pattern, not /connect). Also, the oauth_user_provider is set for my custom service.

	import React, { Component } from 'react'
	import { RootNavigator } from './navigators'
	import { GoogleAnalyticsTracker } from './utils/analytics'
	import { GA_TRACKING_ID } from './constants'

	class App extends Component {
	// gets the current screen from navigation state
	getCurrentRouteName = (navigationState) => {
	if (!navigationState) {
	return null

	<?php
	/**
	* @file
	* gvdump.php
	*
	* @author: Frédéric G. MARAND <fgm@osinet.fr>
	*
	* @copyright (c) 2014 Ouest Systèmes Informatiques (OSInet).
	*
	* @license MIT

	// An example controller binded to the form
	function FormCntl($scope, $compile) {
	// Consider using FosJsRouting bundle, if you want to use a Symfony2 route
	$scope.formUrl = "http://url-to-fetch-my-form";

	// Data from the form will be binded here
	$scope.data = {};

	// Method called when submitting the form
	$scope.submit = function() {

	#!/usr/bin/env bash

	# Step 1: Fill in EMAIL, TOKEN, DOMAIN and SUBDOMAIN. Your API token is here: https://dash.cloudflare.com/profile/api-tokens
	# Make sure the token is the Global token, or has these permissions: #zone:read, #dns_record:read, #dns_records:edit
	# If you want to set the root domain instead of a subdomain, set SUBDOMAIN to "@"
	# Step 2: Create an A record on Cloudflare with the subdomain you chose
	# Step 3: Run "./ddns.sh -l" to get the zone_id and rec_id of the record you created.
	# Fill in ZONE_ID and REC_ID below
	# This step is optional, but will save you 2 requests every time you run this script
	# Step 4: Run "./ddns.sh". It should tell you that record was updated or that it didn't need updating.