There are a number of text conventions used throughout this book.
CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "In the alpha-mgmt network, open the SSH port 22 to all servers with the network tag alpha-server."
A block of code is set as follows:
#! /bin/bashapt-get updateapt-get install -y apache2cat <<EOF > /var/www/html/index.html<html><body><h1>Hello World</h1><p>Web server on the alpha and beta networks</p></body></html>EOF
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
### Hardcoding tokens in a program is never ...
