Book Image

Mastering Windows PowerShell Scripting (Second Edition) - Second Edition

By : Brenton J.W. Blawat
Book Image

Mastering Windows PowerShell Scripting (Second Edition) - Second Edition

By: Brenton J.W. Blawat

Overview of this book

PowerShell scripts offer a handy way to automate various chores. Working with these scripts effectively can be a difficult task. This comprehensive guide starts from scratch and covers advanced-level topics to make you a PowerShell expert. The first module, PowerShell Fundamentals, begins with new features, installing PowerShell on Linux, working with parameters and objects, and also how you can work with .NET classes from within PowerShell. In the next module, you’ll see how to efficiently manage large amounts of data and interact with other services using PowerShell. You’ll be able to make the most of PowerShell’s powerful automation feature, where you will have different methods to parse and manipulate data, regular expressions, and WMI. After automation, you will enter the Extending PowerShell module, which covers topics such as asynchronous processing and, creating modules. The final step is to secure your PowerShell, so you will land in the last module, Securing and Debugging PowerShell, which covers PowerShell execution policies, error handling techniques, and testing. By the end of the book, you will be an expert in using the PowerShell language.
Table of Contents (24 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

System.Xml


PowerShell primarily uses the System.Xml.XmlDocument object to work with XML content.

ConvertTo-Xml

The ConvertTo-XML command creates an XML representation of an object as an XmlDocument. For example, the current PowerShell process object might be converted to XML:

Get-Process -Id $pid | ConvertTo-Xml 

Note

XML is text:The command used in the previous code creates an XML representation of the object. All numeric values are stored as strings. The following example shows that the WorkingSet property, normally an integer, is held as a string:$xml = Get-Process -Id $pid | ConvertTo-Xml$property = $xml.Objects.Object.Property |Where-Object Name -eq WorkingSet$property.'#text'.GetType()

XML type accelerator

The XML type accelerator ([Xml]) can be used to create instances of XmlDocument, as shown in the following code:

[Xml]$xml = @" 
<?xml version="1.0"?> 
<cars> 
<car type="Saloon"> 
<colour>Green</colour> 
<doors>4</doors> 
<transmission>Automatic...