1．Introduction

Automation Is a Must

How Perl CanHelp You

This Book Will Show You How

What You Need

Some Notes About the Perl Versions Used for This Book

What About Perl 5.10?

What About Strawberry Perl?

What About Perl 6?

Some Notes About Using Vista with the Code in This Book

Locating and Installing Modules

Installing Modules on Unix

Installing Modules on Win32

It's Not Easy Being Omnipotent

Don't Do It

Drop Your Privileges As Soon As Possible

Be Careful When Reading Data

Be Careful When Writing Data

Avoid Race Conditions

Enjoy

References for More Information

2．Filesystems

Perl to the Rescue

Filesystem Differences

Unix

Windows-Based Operating Systems

Mac OS X

Filesystem Differences Summary

Dealing with Filesystem Differences from Perl

Walking or Traversing the Filesystem by Hand

Walking the Filesystem Using the File::Find Module

Walking the Filesystem Using the File::Find::Rule Module

Manipulating Disk Quotas

Editing Quotas with edquota Trickery

Editing Quotas Using the Quota Module

Editing NTFS Quotas Under Windows

Querying Filesystem Usage

Module Information for This Chapter

References for More Information

3．User Accounts

Unix User Identities

The Classic Unix Password File

Changes to the Password File in BSD 4.4 Systems

Shadow Passwords

Windows-Based Operating System User Identities

Windows User Identity Storage and Access

Windows User ID Numbers

Windows Passwords Don't Play Nice with Unix Passwords

Windows Groups

Windows User Rights

Building an Account System to Manage Users

The Backend Database

The Low-Level Component Library

The Process Scripts

Account System Wrap-Up

Module Information for This Chapter

References for More Information

Unix Password Files

Windows User Administration

4．User Activity

Process Management

Windows-Based Operating System Process Control

Unix Process Control

File and Network Operations

Tracking File Operations on Windows

Tracking Network Operations on Windows

Tracking File and Network Operations in Unix

Module Information for This Chapter

Installing Win32::Setupsup

References for More Information

5．TCP/IP Name and Configuration Services

Host Files

Generating Host Files

Error-Checking the Host File Generation Process

Improving the Host File Output

Incorporating a Source Code Control System

NIS,NIS+,and WINS

NIS+

Windows Internet Name Server(WINS)

Domain Name Service(DNS)

Generating DNS(BIND)Configuration Files

DNS Checking:An Iterative Approach

DHCP

Active Probing for Rogue DHCP Servers

Monitoring Legitimate DHCP Servers

Module Information for This Chapter

References for More Information

6．Working with Configuration Files

Configuration File Formats

Binary

Naked Delimited Data

Key/Value Pairs

Markup Languages

All-in-One Modules

Advanced Configuration Storage Mechanisms

Module Information for This Chapter

References for More Information

XML and YAML

7．SQL Database Administration

Interacting with a SQL Server from Perl

Using the DBI Framework

Using ODBC from Within DBI

Server Documentation

MySQL Server via DBI

Oracle Server via DBI

Microsoff SQL Server via ODBC

Database Logins

Monitoring Space Usage on a Database Server

Module Information for This Chapter

References for More Information

DBI

Microsoft SQL Server

ODBC

Oracle

8．Email

Sending Mail

Getting sendmail(or a Similar Mail Transport Agent)

Using the OS-Specific IPC Framework to Drive a Mail Client

Speaking the Mail Protocols Directly

Common Mistakes in Sending Email

Overzealous Message Sending

Subject Line Waste

Insufficient Information in the Message Body

Fetching Mail

Talking POP3 to Fetch Mail

Talking IMAP4revl to Fetch Mail

Processing Mail

Dissecting a Single Message

Dissecting a Whole Mailbox

Dealing with Spam

Support Mail Augmentation

Module Information for This Chapter

References for More Information

9．Directory Services

What's a Directory?

Finger:A Simple Directory Service

The WHOIS Directory Service

LDAP:A Sophisticated Directory Service

LDAP Programming with Perl

The Initial LDAP Connection

Performing LDAP Searches

Entry Representation in Perl

Adding Entries with LDIF

Adding Entries with Standard LDAP Operations

Deleting Entries

Modifring Entry Names

Modifying Entry Attributes

Deeper LDAP Topics

Putting It All Together

Active Directory Service Interfaces

ADSI Basics

Using ADSI from Perl

Dealing with Container/Collection Objects

Identifying a Container Object

So How Do Yon Know Anything About an Object?

Searching

Performing Common Tasks Using the WinNT and LDAP Namespaces

Working with Users via ADSI

Working with Groups via ADSI

Working with File Shares via ADSI

Working with Print Queues and Print Jobs via ADSI

Working with Windows-Based Operating System Services via ADSI

Module Information for This Chapter

References for More Information

LDAP

ADSI

10．Log Files

Reading Text Logs

Reading Binary Log Files

Using unpack()

Calling an OS(or Someone Else's)Binary

Using the OS's Logging API

Structure of Log File Data

Dealing with Log File Information

Space Management of Logging Information

Log Parsing and Analysis

Writing Your Own Log Files

Logging Shortcuts and Formatting Help

Basic/Intermediate Logging Frameworks

Advanced Logging Framework

Module Information for This Chapter

References for More Information

11．Security

Noticing Unexpected or Unauthorized Changes

Local Filesystem Changes

Changes in Data Served Over the Network

Noticing Suspicious Activities

Local Signs of Peril

Finding Problematic Patterns

Danger on the Wire,or"Perl Saves the Day"

Preventing Suspicious Activities

Suggest Better Passwords

Reiect Bad Passwords

Module Information for This Chapter

References for More Information

12．SNMP

Using SNMP from Perl

Sending and Receiving SNMP Traps,Notifications,and Informs

Alternative SNMP Programming Interfaces

Module Information for This Chapter

References for More Information

13．Network Mapping and Monitoring

Network Mapping

Discovering Hosts

Discovering Network Services

Physical Location

Presenting the Information

Textual Presentation Tools

Graphical Presentation Tools

Monitoring Frameworks

Extending Existing Monitoring Packages

What's Left?

Module Information for This Chapter

References for More Information

14．Experiential Learning

Playing with Timelines

Task One:Parsing crontab Files

Task Two:Displaying the Timeline

Task Three:Writing Out the Correct XML File

Putting It All Together

Summary:What Can We Learn from This?

Playing with Geocoding

Geocoding from Postal Addresses

Geocoding from IP Addresses

Summary:What Can We Learn from This?

Playing with an MP3 Collection

Summary:What Can We Learn from This?

One Final Exploration

Part One:Retrieving the Wiki Page with WWW::Mechanize

Part Two:Extracting the Data

Part Three:Geocoding and Mapping the Data

Summary:What Can We Learn from This?

Remember to Play

Module Information for This Chapter

Source Material for This Chapter

A．The Eight-Minute XML Tutorial

B．The 10-Minute XPath Tutorial

C．The 10-Minute LDAP Tutorial

D．The 15-Minute SQL Tutorial

E．The Five-Minute RCS Tutorial

F．The Two-Minute VBScript-to-Perl Tutorial

G．The 20-Minute SNMP Tutorial

Index