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. Here is an example: “The useradd command in Linux is used to create a new user account or update an existing one.”
A block of code is set as follows:
username:password:lastpasswordchanged:minpasswordage:maxpasswordage:passwordwarningperiod:inactivityperiod:expirationdate:reservedfield
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
username:password:lastpasswordchanged:minpasswordage:maxpasswordage:passwordwarningperiod:inactivityperiod:expirationdate:reservedfield
Any command-line input or output is written as follows:
sudo "useradd [options] username"
Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: “Our second step is to select the x86_64 option for all architectures.”
Tips or important notes
Appear like this.
