Book Image

Mastering Windows PowerShell Scripting - Third Edition

By : Chris Dent
Book Image

Mastering Windows PowerShell Scripting - Third Edition

By: Chris Dent

Overview of this book

PowerShell scripts offer a handy way to automate various chores, however working effectively with these scripts can be a difficult task. This comprehensive guide starts with the fundamentals before moving on to advanced-level topics to help you become a PowerShell Core 6.0 expert. The first module, PowerShell Core 6.0 Fundamentals, begins with the new features of PowerShell Core 6.0, installing it on Linux, and working with parameters, objects and .NET classes from within PowerShell Core 6.0. As you make your way through the chapters, you'll see how to efficiently manage large amounts of data and interact with other services using PowerShell Core 6.0. You'll be able to make the most of PowerShell Core 6.0's powerful automation feature, where you will have different methods available to parse data and manipulate regular expressions and Windows Management Instrumentation (WMI). After having explored automation, you will enter the extending PowerShell Core 6.0 module, covering asynchronous processing and desired state configuration. In the last module, you will learn to extend PowerShell Core 6.0 using advanced scripts and filters, and also debug issues along with working on error handling techniques. By the end of this book, you will be an expert in scripting with PowerShell Core 6.0.
Table of Contents (27 chapters)
Free Chapter
1
Section 1: Exploring PowerShell Fundamentals
6
Section 2: Working with Data
16
Section 3: Automating with PowerShell
19
Section 4: Extending PowerShell

Working with jobs

The job commands in PowerShell provide a means of executing code asynchronously by creating a new PowerShell process for each job.

As each job executes within a new process, data cannot be shared between jobs. Any required modules, functions, or variables all need to be imported into each job.

In addition, jobs might be considered resource heavy as each job must start both a PowerShell process and a console window's host process.

PowerShell provides a number of commands to create and interact with jobs. In addition to the following commands, Invoke-Command with the AsJob parameter might be used when acting against remote systems.

The Start-Job, Get-Job, and Remove-Job commands

The Start-Job command is...