Book Image

Mastering PowerShell Scripting - Fourth Edition

By : Chris Dent
5 (1)
Book Image

Mastering PowerShell Scripting - Fourth Edition

5 (1)
By: Chris Dent

Overview of this book

PowerShell scripts offer a convenient way to automate various tasks, but working with them can be daunting. Mastering PowerShell Scripting takes away the fear and helps you navigate through PowerShell's capabilities.This extensively revised edition includes new chapters on debugging and troubleshooting and creating GUIs (online chapter). Learn the new features of PowerShell 7.1 by working with parameters, objects, and .NET classes from within PowerShell 7.1. This comprehensive guide starts with the basics before moving on to advanced topics, including asynchronous processing, desired state configuration, using more complex scripts and filters, debugging issues, and error-handling techniques. Explore how to efficiently manage substantial amounts of data and interact with other services using PowerShell 7.1. This book will help you to make the most of PowerShell's automation features, using different methods to parse data, manipulate regular expressions, and work with Windows Management Instrumentation (WMI).
Table of Contents (26 chapters)
24
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25
Index

WMI Type Accelerators

The WMI cmdlets were removed in PowerShell 6 and are not going to be reinstated.

The following type accelerators remain and can still be used:

  • Wmi: System.Management.ManagementObject
  • WmiClass: System.Management.ManagementClass
  • WmiSearcher: System.Management.ManagementObjectSearcher

When necessary, these accelerators may be used to simulate the functionality provided by the older WMI cmdlets.

Both the Wmi and WmiClass type accelerators can be written to use a remote computer by including the computer name. An example is as follows:

[Wmi]"\\RemoteComputer\root\cimv2:Win32_Process.Handle=$PID" 
[WmiClass]"\\RemoteComputer\root\cimv2:Win32_Process" 

You can use these classes in PowerShell 6 and higher.

Getting instances

You can use the type accelerator WmiSearcher to execute queries and retrieve results:

([WmiSearcher]"SELECT * FROM Win32_Process").Get() 

The returned...