Sams.Windows.PowerShell.Unleashed.Apr.2007.pdf

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Tyson Kopczynski

Windows ®

PowerShell

UNLEASHED

800 East 96th Street, Indianapolis, Indiana 46240 USA

Windows ® PowerShell Unleashed

system, or transmitted by any means, electronic, mechanical, photocopying, recording,

or otherwise, without written permission from the publisher. No patent liability is

assumed with respect to the use of the information contained herein. Although every

precaution has been taken in the preparation of this book, the publisher and author

assume no responsibility for errors or omissions. Nor is any liability assumed for

damages resulting from the use of the information contained herein.

International Standard Book Number: 0-672-32953-0

Editor-in-Chief

Karen Gettman

Senior Acquisitions

Editor

Neil Rowe

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Library of Congress Cataloging-in-Publication Data

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Kopczynski, Tyson.

Microsoft PowerShell unleashed / Tyson Kopczynski.

p. cm.

ISBN 0-672-32953-0

Copy Editor

Lisa M. Lord

Microsoft Windows (Computer file) 2.

Operating systems (Computers)

I. Title.

Senior Indexer

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QA76.76.O63K66 2007

005.4’46—dc22

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Publishing

2007008894

Printed in the United States of America

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4321

Contributing Authors

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Weinhardt, and

Josh Tolle

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Contents at a Glance

Introduction .................................................................................. 1

Part I

Introduction to PowerShell

Introduction to Shells and PowerShell ................................................ 7

PowerShell Basics .......................................................................... 19

PowerShell: A More In-Depth Look .................................................. 57

Code Signing ................................................................................ 93

PowerShell Scripting Best Practices ................................................. 107

Part II

Translating Your Existing Knowledge into PowerShell

PowerShell and the File System ....................................................... 125

PowerShell and the Registry ........................................................... 157

PowerShell and WMI .................................................................... 183

PowerShell and Active Directory .................................................... 205

Part III

Using PowerShell to Meet Your Automation Needs

Using PowerShell in the Real-World ................................................ 235

Using PowerShell to Manage Exchange ........................................... 261

Index ........................................................................................ 295

Table of Contents

Introduction

Part I

Introduction to PowerShell

Introduction to Shells and PowerShell 7

What Is a Shell? ............................................................................... 7

Basic Shell Use ......................................................................... 8

Basic Shell Scripts ................................................................... 10

A Shell History .............................................................................. 14

Enter PowerShell ............................................................................ 16

Summary ...................................................................................... 17

PowerShell Basics 19

Introduction ................................................................................. 19

Getting Started .............................................................................. 19

Accessing PowerShell ...................................................................... 21

Understanding the Command-Line Interface (CLI) .............................. 22

Navigating the CLI ................................................................. 24

PowerShell Command Types .................................................... 26

Calling PowerShell from Other Shells ........................................ 30

Understanding cmdlets ................................................................... 33

Common Parameters .............................................................. 34

Useful cmdlets ............................................................................... 35

Get-Help ............................................................................... 35

Get-Command ....................................................................... 38

Expressions ................................................................................... 40

Understanding Variables ................................................................. 41

Built-in Variables .................................................................... 42

Understanding Aliases ..................................................................... 45

Discovering Alias cmdlets ........................................................ 47

Creating Persistent Aliases ........................................................ 48

Escape Sequences ........................................................................... 49

Understanding Scopes ..................................................................... 50

Global .................................................................................. 50

Local .................................................................................... 51

Script ................................................................................... 51

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