Book Image

PowerShell Core for Linux Administrators Cookbook

By : Prashanth Jayaram, Ram Iyer
Book Image

PowerShell Core for Linux Administrators Cookbook

By: Prashanth Jayaram, Ram Iyer

Overview of this book

PowerShell Core, the open source, cross-platform that is based on the open source, cross-platform .NET Core, is not a shell that came out by accident; it was intentionally created to be versatile and easy to learn at the same time. PowerShell Core enables automation on systems ranging from the Raspberry Pi to the cloud. PowerShell Core for Linux Administrators Cookbook uses simple, real-world examples that teach you how to use PowerShell to effectively administer your environment. As you make your way through the book, you will cover interesting recipes on how PowerShell Core can be used to quickly automate complex, repetitive, and time-consuming tasks. In the concluding chapters, you will learn how to develop scripts to automate tasks that involve systems and enterprise management. By the end of this book, you will have learned about the automation capabilities of PowerShell Core, including remote management using OpenSSH, cross-platform enterprise management, working with Docker containers, and managing SQL databases.
Table of Contents (19 chapters)

Creating a simple hashtable

To be honest, if you followed the course of this book without skipping recipes, you have already seen a few hashtable demonstrations. However, it has not been shown in this light so far. So, off we go.

You would like to create a list of processes and the amount of working set each of them uses. You would like to access each of the processes by name. You do not require any detail from the process table other than the working set. As an example, show the amount of working set used by pwsh.

How to do it...

The script is a simple three-liner:

  1. Initialize a hashtable
  2. List out all the processes
  3. Add the process name as well as the working set to the new array you created

The following script can accomplish...