This portable reference to PowerShell summarizes the command shell and scripting language and provides a concise guide to the many tasks that make PowerShell so useful. If you're a busy administrator and don't have time to plow through huge books or in-depth online searches, this is the ideal on-the-job tool.
Written by PowerShell team member Lee Holmes and excerpted from his PowerShell Cookbook, this edition offers up-to-date coverage of Windows PowerShell 5.1 and open source PowerShell Core up to 7 and beyond.
Beginning with a guided tour of PowerShell, this handy guide covers:

PowerShell language and environment

Regular expression reference

XPath quick reference

.NET string formatting

.NET DateTime formatting

Selected .NET classes and their uses

WMI reference

Selected COM objects and their uses

Standard PowerShell verbs