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

Permissions


The filesystem and registry providers both support Get-Acl and Set-Acl, which allow the different access control lists to be modified.

Working with permissions in PowerShell involves a mixture of PowerShell commands and .NET objects and methods.

While some of the values and classes differ between the different providers, many of the same concepts apply.

The following snippet creates a set of files and folders in C:\Temp. These files and folders are used in the examples that follow:

New-Item C:\Temp\ACL -ItemType Directory -Force
1..5 | ForEach-Object {
New-Item C:\Temp\ACL\$_ -ItemType Directory -Force
'content' | Out-File "C:\Temp\ACL\$_\$_.txt"
New-Item C:\Temp\ACL\$_\$_ -ItemType Directory -Force
'content' | Out-File "C:\Temp\ACL\$_\$_\$_.txt"
}

The Get-Acl command is used to retrieve an existing Access Control List (ACL) for an object. Set-Acl is used to apply an updated ACL to an object.

If Get-Acl is used against a directory, the ACL type is DirectorySecurity; for a file, the...