Conventions

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: "We can include other contexts through the use of the include directive."

A block of code is set as follows:

auto lo
 
iface lo inet loopback
iface eth0 inet dhcp

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

allow-hotplug wlan0
auto wlan0
 
iface wlan0 inet dhcp

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

sudo touch wpa_supplication.conf 
nano wpa_supplication.conf

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: "Clicking the Next button moves you to the next screen."