The following table describes the typographic conventions that are used in this book.Typeface Meaning Example AaBbCc123 The names of commands, files, and directories, and onscreen computer output Edit your .login file. Use ls a to list all files. machine_name% you have mail. AaBbCc123 What you type, contrasted with onscreen computer output machine_name% suPassword: aabbcc123 Placeholder: replace with a real name or value The command to remove a file is rm filename. AaBbCc123 Book titles, new terms, and terms to be emphasized Read Chapter 6 in the User's Guide. A cache is a copy that is stored locally.Do not save the file.Note: Some emphasized items appear bold online. The following table shows the default UNIX system prompt and superuser prompt for the C shell, Bourne shell, and Korn shell.Shell Prompt C shell machine_name% C shell for superuser machine_name# Bourne shell and Korn shell $ Bourne shell and Korn shell for superuser #