Book Image

Learn PowerShell Core 6.0

By : David das Neves, Jan-Hendrik Peters
Book Image

Learn PowerShell Core 6.0

By: David das Neves, Jan-Hendrik Peters

Overview of this book

Beginning with an overview of the different versions of PowerShell, Learn PowerShell Core 6.0 introduces you to VSCode and then dives into helping you understand the basic techniques in PowerShell scripting. You will cover advanced coding techniques, learn how to write reusable code as well as store and load data with PowerShell. This book will help you understand PowerShell security and Just Enough Administration, enabling you to create your own PowerShell repository. The last set of chapters will guide you in setting up, configuring, and working with Release Pipelines in VSCode and VSTS, and help you understand PowerShell DSC. In addition to this, you will learn how to use PowerShell with Windows, Azure, Microsoft Online Services, SCCM, and SQL Server. The final chapter will provide you with some use cases and pro tips. By the end of this book, you will be able to create professional reusable code using security insight and knowledge of working with PowerShell Core 6.0 and its most important capabilities.
Table of Contents (26 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Types


You need to learn that PowerShell is an object-oriented programming or scripting language, and it is based on .NET. What does that actually mean? Every parameter and every return value are of a specific type. And because PowerShell is based on .NET, these are .NET types. There are different ways to retrieve the type of an object:

"String"
[System.DateTime]"24/08/2018"
"String".GetType()

([System.DateTime]"24/08/2018").GetType()
Get-Member -InputObject "String"

This differs from most of the other scripting languages, where you primarily pass and retrieve strings, and makes PowerShell a scripting language with a lot of similarities to full stack developing languages. In the following overview, you will see the commonly used types:

# sequence of UTF-16 code units.
[String]
# character as a UTF-16 code unit.
[Char]
# 8-bit unsigned integer.
[Byte]

# 32-bit signed integer
[Int]
#64-bit signed integer
[Long]
# 128-bit decimal value
[Decimal]
# Single-precision 32-bit floating point number...