Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles.

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

donnie@ubuntu20-04:~$ sudo systemctl daemon-reload
[sudo] password for donnie: 
donnie@ubuntu20-04:~$

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: Click Flash from Etcher to write the image.

Tips or important notes

Appear like this.