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7015 Windows PowerShell Scripting & Toolmaking #55039

This Course teaches you the correct patterns and practices for building reusable, tightly scoped units of automation. You will learn to: Describe the correct patterns for building modularized tools in Windows PowerShell.


This Course teaches you the correct patterns and practices for building reusable, tightly scoped units of automation. You will learn to: Describe the correct patterns for building modularized tools in Windows PowerShell; Build highly modularized functions that comply with native PowerShell patterns; Build controller scripts that expose user interfaces and automate business processes.

Manage data in a variety of formats; Write automated tests for tools; and Use the debugging tools.


  • Experience with basic Windows administration
  • Windows PowerShell to query & modify system information
  • Windows PowerShell to discover commands & their usage
  • And experience with WMI and/or CIM to query system information


Tool Design

  • Tools do one thing
  • Flexible
  • And, Tools look native

Start with a Command

  • Why start with a command?
  • Discovery and experimentation

Build a Basic Function and Module

  • Start with a basic function
  • Create a script module
  • Check prerequisites
  • Run the new command

Adding CmdletBinding and Parameterizing

  • About CmdletBinding and common parameters
  • Accepting pipeline input
  • Mandatory-ness
  • Parameter validation
  • Parmeter aliases

Emitting Objects as Output

  • Assembling information
  • Constructing and emitting output
  • Quick tests

An Interlude: Changing Your Approach

  • Examining a script
  • Critiquing a script
  • Revising the script

Using Verbose, Warning, and Informational Output

  • Knowing the six channels
  • Adding verbose and warning output
  • Doing more with verbose output
  • Informational output

Comment-Based Help

  • Where to put your help
  • Getting started
  • Going further with comment-based help
  • Broken help

Handling Errors

  • Understanding errors and exceptions
  • Bad handling
  • Two reasons for exception handling
  • Handling exceptions in our tool
  • Capturing the actual exception
  • Handling exceptions for non-commands
  • Going further with exception handling
  • Deprecated exception handling

Basic Debugging

  • Two kinds of bugs
  • The ultimate goal of debugging
  • Developing assumptions
  • Write-Debug
  • Set-PSBreakpoint
  • The PowerShell ISE

Going Deeper with Parameters

  • Parameter positions
  • Validation
  • Multiple parameter sets
  • Value from remaining arguments
  • Help messages
  • Aliases
  • More CmdletBinding

Writing Full Help

  • External help
  • Using PlatyPs
  • Supporting online help
  • “About” topics
  • Making your help updatable

Unit Testing Your Code

  • Sketching out the test
  • Making something to test
  • Expanding the test
  • Going further with Pester

Extending Output Types

  • Understanding types
  • The Extensible Type System
  • Extending an object
  • Using Update-TypeData

Analyzing Your Script

  • Performing a basic analysis
  • Analyzing the analysis

Publishing Your Tools

  • Begin with a manifest
  • Publishing to PowerShell Gallery
  • Publishing to private repositories

Basic Controllers: Automation Scripts and Menus

  • Using UIChoice
  • Writing a process controller

Proxy Functions

  • A proxy example
  • Creating the proxy base
  • Modifying the proxy
  • Adding or removing parameters

Working with XML Data

  • Simple: CliXML
  • Importing native XML
  • ConvertTo-XML
  • Creating native XML from scratch

Working with JSON Data

  • Converting to JSON
  • Converting from JSON

Working with SQL Server Data

  • SQL Server terminology and facts
  • Connecting to the server and database
  • Writing a query
  • Running a query
  • Invoke-SqlCmd
  • Thinking about tool design patterns

Final Exam

  • Lab problem
  • Break down the problem
  • Do the design
  • Test the commands
  • Code the tool

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