Write-Debug - Powershell 2.0 CmdLet

Microsoft Windows PowerShell is a command-line shell and scripting tool based on the Microsoft .NET Framework. It is designed for system administrators, engineers and developers to control and automate the administration of Windows and applications.

More than hundred command-line tools (so called "cmdlets") can be used to perform system administration tasks and Windows Management Instrumentation (WMI). These cmdlets are easy to use, with standard naming conventions and common parameters, and standard tools for piping, sorting, filtering, and formatting data and objects.

Write-Debug

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Short description
Writes a debug message to the console.

Syntax
Write-Debug [-Message] <string> [<CommonParameters>]

Description
The Write-Debug cmdlet writes debug messages to the console from a script or command. 

By default, debug messages are not displayed in the console, but you can display them by using the Debug parameter 
or the $DebugPreference variable.