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: "Use the ps:scale command to scale up the web processes."

A block of code is set as follows:

#!/bin/sh

cat << EOF
---
addons:
  - heroku-postgresql:dev
default_process_types:
  web: bin/node server.js
EOF

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

$ heroku create myapp --buildpack https://github.com/heroku/heroku-buildpack-mylang

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: "You can also restart a web application using the Restart button on the Processes tab of your web app."