Inspired by Jakob Lægdsmand’s fantasic how to get an awesome looking terminal on mac os x blog post, I switched my OS X Terminal from the humble Bash (Bourne Again SHell) to the Zsh (Z shell). I also installed Oh-My-Zsh, an open source, community-driven framework for managing Zsh’s configuration.


A Bash OS X Terminal with Homebrew theme
A Bash OS X Terminal with Homebrew theme.


A Zsh OS X Terminal with Solarized (Dark) theme and Oh-My-Zsh eastwood theme
A Zsh OS X Terminal with Solarized (Dark) theme and Oh-My-Zsh eastwood theme.

Oh-My-Zsh is a thing of beauty. My shell and I are in a very happy place indeed!

         __                                     __
  ____  / /_     ____ ___  __  __   ____  _____/ /_
 / __ \/ __ \   / __ `__ \/ / / /  /_  / / ___/ __ \
/ /_/ / / / /  / / / / / / /_/ /    / /_(__  ) / / /
\____/_/ /_/  /_/ /_/ /_/\__, /    /___/____/_/ /_/

Welcome to the future of CSS layout: The CSS Flexible Box Layout Module (or Flexbox for short). It is a powerful new CSS box model optimised for user interface design. Look how easy it is to implement a Holy Grail page layout.


<!doctype html>
<html lang="en">
<title>A Holy Grail Flexbox layout</title>
<link rel="stylesheet" href="normalize.css">
<link rel="stylesheet" href="holy-grail.css">
<body class="holy-grail">
    <div class="holy-grail-body">
        <main class="holy-grail-content">
        <nav class="holy-grail-nav">
        <aside class="holy-grail-sidebar">


body {
        background: #c4d1d1;
.holy-grail {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    width: 80%;
    margin: 0 auto;
.holy-grail-body {
    display: flex;
    flex: 1;
.holy-grail-content {
    flex: 1;
    background: #ffc94e;
.holy-grail-nav, .holy-grail-sidebar {
    /* 12em is the width of the columns */
    flex: 0 0 12em;
    background: #c9ea5d;
.holy-grail-nav {
    /* put the nav on the left */
    order: -1;
    background: #85d6e4;
    background: #92e4c9;
    background: #f7846a;
* {
    color: #333;

Which yields the following:

A Holy Grail Flexbox layout
A Holy Grail Flexbox layout.

For more information about Flexbox, check out the comprehensive A Complete Guide to Flexbox article on CSS-Tricks.

I’ve grown to love Google’s note taking service, Google Keep. It provides a simple, fast and convenient method for taking notes and boasts excellent cross platform support. The killer feature for me is the ability to access my notes on a multitude of devices, quickly and easily.

In my opinion, there are two reasons this works so well: simplicity and design. The app is simple. It does one thing, very, very well indeed. A key part of the design is the beautiful colour palette that Google have chosen for Keep. It is vibrant and fun, but not too bright to distract you from taking notes. You can assign each note one of eight different colours: white, red, orange, yellow, lime, green, blue or grey.

Taste the rainbow


background-color: #ffffff  // white
background-color: #f7846a  // red
background-color: #ffc94e  // orange
background-color: #f1f14e  // yellow
background-color: #c9ea5d  // lime
background-color: #92e4c9  // green
background-color: #85d6e4  // blue
background-color: #c4d1d1  // grey


background-color: rgb(255,255,255)  // white
background-color: rgb(247,132,106)  // red
background-color: rgb(255,201,78)   // orange
background-color: rgb(241,241,78)   // yellow
background-color: rgb(201,234,93)   // lime
background-color: rgb(146,228,201)  // green
background-color: rgb(133,214,228)  // blue
background-color: rgb(196,209,209)  // grey
Google Keep White Google Keep Red Google Keep Orange Google Keep Yellow Google Keep Lime Google Keep Green Google Keep Blue Google Keep Grey
An array of eight beautiful colours.

GIMP palette

When it comes to image manipulation, my weapon of choice is the formidable GNU Image Manipulation Program (GIMP). It’s a fast, free, cross-platform equivalent to Adobe’s Photoshop. Like any decent image editor, GIMP allows you to create a custom palette containing various combinations of colours. A palette is essentially a plain text file with a Name at the top, followed by a list of colours. On Mac OS X (10.9.2), the default palette files for GIMP (2.8.10) are saved in: /Applications/ folder. I created a new palette file called Google_Keep.gpl and saved it in the respective palettes folder:

GIMP Palette
Name: Google Keep
255 255 255  White
247 132 106  Red
255 201  78  Orange
241 241  78  Yellow
201 234  93  Lime
146 228 201  Green
133 214 228  Blue
196 209 209  Grey

My students have access to Microsoft Visual Studio 2010 to execute C applications. Creating a new project for each exercise is time consuming. Here is a simple method to allow the user to select which exercise they want to run. The caveat is that all the exercises have to reside in the same file. But it’s easier to do this once per week than once per exercise.

 Name        : main.c
 Author      : Michael Park
 Version     : 1.0
 Copyright   : (2013)
 Description : Simple menu system in C

#include <stdio.h>

void exercise1()
	// Exercise 1
void exercise2()
	// Exercise 2
void exercise3()
	// Exercise 3
int main()
    int choice;

    puts("Choose an exercise between 1 and 3:");
    scanf("%d", &choice);
    switch (choice) {
        case 1:
        case 2:
        case 3:
        case 4:
            puts("Please enter a number between 1 and 3!");

For those of you who don’t know, TextWrangler is a popular, free text editor for Mac OS X. Today, I’m going to show you how to make it shine by applying a slick, custom colour scheme.

But “what’s a colour scheme?”, I hear you cry! A colour scheme enables you to customise the colour of the text and the background in your TextWrangler documents. Here are two of my favourites: Solarized (Rui Carmo) and Midnight Blue (Andrew Hazelden). I will now demonstrate how to install Midnight Blue.

Make it so

If you are running Mountain Lion (like me), the Color Schemes folder may not exist. In this case, you must create the folders yourself. To do this, open a Terminal and execute the following command:

$ mkdir -p ~/"Library/Application Support/TextWrangler/Color Schemes/"

Click the following link to download the Midnight Blue Colour Scheme. The raw configuration file will open in your web browser. Press ⌘ A to save the file into your ~/Downloads folder.

By default, Mac OS X will save the file as a plain text document named Midnight%20Blue%20v1.bbcolors.txt, so we need to rename the file.

To do this, open your ~/Downloads folder, locate the file and press Enter to rename it. Delete the .txt extension from the end of the file and the two %20 URL encodings.

You should be left with a single file at the following path: ~/Downloads/Midnight Blue v1.bbcolors. If not, have a word with yourself and go back to the start of this article. If so, read on.

Install colour scheme

First and foremost make sure that TextWrangler is completely closed. Not running. Dead. To install the Midnight Blue v1 Colour Scheme, simply copy the theme file into your TextWrangler Applications Support folder:

$ cp ~/"Downloads/Midnight Blue v1.bbcolors" ~/"Library/Application Support/TextWrangler/Color Schemes/"

Activate color scheme

Launch TextWrangler and select “Preferences” (or press ⌘ , hotkey). In the Preferences window click on the ‘Text Colors’ section. From the Color Scheme pop-up menu select “Midnight Blue v1”. Et voilà! Welcome to the world of beautiful syntax. Enjoy!

Midnight Blue v1 Colour Theme TextWrangler
A marked improvement