The following table describes the typographic conventions used in this book.
| Meaning | Examples |
|---|---|
| The name of commands, files, and directories. On screen computer output. |
Edit your .login file. Use ls -a to list all files. 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. |
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