In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Once you have done this, you will need to run fdisk on that particular drive."

A block of code is set as follows:

#!/usr/bin/env python
import RPi.GPIO as GPIO

#Use BCM numbering
GPIO.setmode(GPIO.BCM)

Any command-line input or output is written as follows:

sudo fdisk /dev/sdx

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "We can enter this IP into the Host Name input field on PuTTY"