The following table describes the typographic conventions used in this book.
| Meaning | Examples |
|---|---|
| The names of commands. | Use ls -l to list all files. |
| The names of files. | Edit your .login file. |
| On screen computer output. |
You have mail. |
| What you type, when contrasted with on-screen computer output. |
% su Password: |
| Manual page references. | Use su(1) to change user names. |
| User and group names | Only root can do this. |
| Emphasis | You must do this. |
| Command line variables; replace with the real name or variable. | To delete a file, type rm filename |
| Environment variables | $HOME is your home directory. |