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: "In a reference implementation, a Neutron DHCP agent runs on one or more infrastructure nodes and spawns a dnsmasq process for each network where DHCP is enabled."

A block of code is set as follows:

[general]

# Generic config options
CONFIG_UNSUPPORTED=n
CONFIG_DEBUG_MODE=n
CONFIG_PROVISION_DEMO=n

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

$ sudo ifdown enp0s3; sudo ifdown enp0s9;
$ sudo ...

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