Contents

 About the Authors

 About the Technical Reviewer

 Acknowledgments

 Introduction

 Chapter 1: Your First Bite of Raspberry Pi

Your Freshly Baked Pi Arrives

List of Ingredients

Micro USB lead

USB Power Adapter

HDMI Lead

HDMI Capable Display

SD Card

SD Card Reader

USB Keyboard and Mouse

Whew, We’re Done!

Don’t Panic!

Linux

What Is Linux?

Downloading Raspbian

Getting Raspbian onto Your SD Card

Using Image Writer on Windows

Using dd on the Mac

First Boot

Configuring Your Pi

Expanding the Filesystem

Configuring the Keyboard

Changing the Password

Configuring the Locale

Changing the Time Zone

Allocating Memory

At Last! It’s Configured!

Summary

 Chapter 2: Surveying the Landscape

Welcome to LXDE

What Do We Have Here?

The Start Menu and Bottom Left of the Task Bar

And on the Right Side…

The Start Menu

Accessories

Education

Internet

Programming

System Tools

Preferences

Summary

 Chapter 3: Getting Comfortable

Ye Olde Computer

Say Hello to the Dumb Terminal

Modern Terminals

Why Do We Still Care About These Things?

Three Terminals

Console

Opening a Virtual Terminal in the GUI

Connecting via SSH

Welcome to the Command Line

Different Shells

Summary

 Chapter 4: The File-Paths to Success

What Is a Filing System?

More than One Filesystem

Separate Roots

Unified Filesystem

The Mac has to be Different

Bring it All Together

Everything as a File

Filesystem Layout

/ (Root Directory)

/root

/etc

/proc

/var

/boot

/bin and /sbin

/dev

/home

/lib

/lost+found

/mnt

/media

/usr

/opt

/srv

/sys

/tmp

Wrapping it Up

Putting it to Work

Where Are We? Using pwd

What’s in Here with Us? Using ls

Creating Files to Play with: Using Touch

Somewhere to Store our Files: Using mkdir

Making Use of a New Directory: Using the mv Command

Time for Some Cloning: How to Use the cp Command

The Power to Destroy: Using the rm Command

Fully Qualified and Relative Paths

Users and Groups

File Permissions

Setting File Permissions

Shortcuts and Links

Summary

 Chapter 5: Essential Commands

Become the Boss

RTFM

System Resource Monitoring

Uptime and Load Average

Tasks

CPU Utilization Percentage

Memory Usage

Process Table

Using free to View Memory Allocation

Disk Usage

Managing Processes

File Commands

Combining Commands

User Environment

The cron Command

Summary

 Chapter 6: Editing Files on the Command Line

What is a Text File?

The Contenders

Starting out with nano

So What Does This All Mean?

Saving Your File

Moving Around in nano

Wrapping Up nano

Getting Started with vim

The vim Modes

Saving Your Changes

Getting Out of vim

Searching in vim

Moving to a Specific Line Number

Moving About in vim

Deleting in vim

Miscellaneous Little Commands

Visual Mode

Indenting Text

Summary

 Chapter 7: Managing Your Pi

Remotely Accessing the Pi

Networking

DNS

SSH

BASH: Basic Coding

What Is BASH?

Starting in BASH

Interpreted versus Compiled

Output in BASH

Recap

Variables

Logical Operation: if

Test Based Arithmetic

Troubleshooting

Logical Operation: Loop

Troubleshooting

Practical BASH: An Init Script

Pick and Match with the case Statement

Application within Application: Forking

Update the Run Files

Creating Your Own init Script

Security and User Management

The Rules of Raspbian Security

Adding a New User

Summary

 Chapter 8: A LAMP of Your Own

First Steps

L is for Linux

A is for Apache

Apache Configuration

Troubleshooting

M is for MySQL

Installing MySQL

Structured Query Language

P is for PHP

Simple Web App

HTML

Starting Our Page

Display the Database Content

Website Data Insertion

Inserting to the Database

Remove Entries

Remove Data from DB

Troubleshooting

Where From Here?

Summary

 Chapter 9: WiPi: Wireless Computing

Preparing for WiPi

Simple Constraint Removal

Removing Human Input Devices

Adding a Remote GUI

True WiPi with WiFi

GUI WiFi Configuration

Managing WiFi from the Command Line

Down to One

Removing the Need for Power

Powered USB Adapters

Summary

 Chapter 10: The Raspberry sPi

Materials Needed

Presetup

Getting Started

dmesg

Troubleshooting

Motion Capture

Troubleshooting

Alerting Yourself

Installing SSMTP

Installing and Using mutt

Testing the Alerting System

Troubleshooting

Bringing It All Together

Understanding the Problem

Making Decisions

Designing Solution

Script 1

Script 2

Testing

Troubleshooting

Where to Go from Here

Summary

 Chapter 11: Pi Media Center

Video with XBMC

Setup to Build

Changing Files with Sed and Regular Expressions

Compiling Source Code

Troubleshooting

Starting and Using XBMC

XBMC on Boot

Troubleshooting

Stream Music with Airplay

Troubleshooting

Airport on Boot

Summary

Index