Conventions

In this book, you will find a number of styles of text 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: "Experiment with the Puppet command-line commands puppet describe, puppet resource, and puppet apply."

A block of code is set as follows:

file {
  '/etc/sysconfig/network-scripts/ifcfg-eth1':
    content => 
'DEVICE="eth1"
BOOTPROTO="dhcp"
ONBOOT="yes"',
}

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

puppet describe --list | less

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "Start the Oracle VM VirtualBox Manager and select Import Appliance from the File menu."