Book Image

Enterprise PowerShell Scripting Bootcamp

By : Brenton J.W. Blawat
Book Image

Enterprise PowerShell Scripting Bootcamp

By: Brenton J.W. Blawat

Overview of this book

Enterprise PowerShell Scripting Bootcamp explains how to create your own repeatable PowerShell scripting framework. This framework contains script logging methodologies, answer file interactions, and string encryption and decryption strategies. This book focuses on evaluating individual components to identify the system’s function, role, and unique characteristics. To do this, you will leverage built-in CMDlets and Windows Management Instrumentation (WMI) to explore Windows services, Windows processes, Windows features, scheduled tasks, and disk statistics. You will also create custom functions to perform a deep search for specific strings in files and evaluate installed software through executable properties. We will then discuss different scripting techniques to improve the efficiency of scripts. By leveraging several small changes to your code, you can increase the execution performance by over 130%. By the end of this book, you will be able to tie all of the concepts together in a PowerShell-based Windows server scanning script. This discovery script will be able to scan a Windows server to identify a multitude of components.
Table of Contents (21 chapters)
Enterprise PowerShell Scripting Bootcamp
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
3
Working with Answer Files
Index

Multiple Windows server scanning script functions


After you finish creating the entire core scripting components, you start defining the individual scanning functions for the script. The scanning functions will evaluate multiple aspects of the system and record all the results in the CSV file. You will create functions for scanning disks, scheduled tasks, processes, Windows services, software, user profiles, Windows features, and directories for files containing strings. You will also create a measure-diskunit function for converting disk storage units.

To create the measure-diskunit and scan-disk functions, you can perform the following:

function measure-diskunit { param($diskspace)
    switch ($diskspace) {
      {$_ -gt 1PB} { return [System.Math]::Round(($_ / 1PB),2),"PB" }
      {$_ -gt 1TB} { return [System.Math]::Round(($_ / 1TB),2),"TB" }
      {$_ -gt 1GB} { return [System.Math]::Round(($_ / 1GB),2),"GB" }
      {$_ -gt 1MB} { return [System.Math]::Round(($_ / 1MB),2),"MB" }
   ...