Preface

contents in uppercase or lowercase letters.

Options

In syntax examples, braces indicate that you are required to choose one of the enclosed options. For example, the following notation means that you must include a 0 or a 1 in the command:

{0, 1}

Square Brackets

In syntax examples, boldface type enclosed in square brackets indicates command options that you can type as needed. For example:

FTP [ –D ] [ –F ]

System Response

Monospace type shows system-generated responses that appear on your workstation screen. For example:

TNVT220>

UNIX Commands

UNIX® commands are shown in boldface letters. For example, vi. Because UNIX is case-sensitive, these commands are usually lowercase. Type UNIX commands exactly as shown.

UNIX Filenames, Directory Names, and Pathnames

UNIX filenames, directory names, and pathnames are shown in italics. For example, /etc/hosts.

Because UNIX is case-sensitive, these names usually are in lowercase letters. Type UNIX filenames exactly as shown.

Variables

Italic type indicates variables—descriptive item names, such as command parameters—that you replace with appropriate values.

For example, in the command

FTP –F remote_host

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