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: "You can do this by issuing the iwconfig command in a terminal window."

A block of code is set as follows:

import ftplib                             #importing ftp module in python
session = ftplib.FTP('server.IP.address.com','USERNAME','PASSWORD')
file = open('*.cap','rb')                  # file to send
session.storbinary('STOR *.cap', file)     # send the file
file.close()                               # close file and FTP
session.quit()                             # Quit the ftp session

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

tcpdump src port 1099 and udp icmp and src port 20

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: "Make sure that you select the correct media and when it is ready, click on the Format button."

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.