Add-PSSnapin - 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.

Add-PSSnapin

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Short description
Adds one or more Windows PowerShell snap-ins to the current session.

Syntax
Add-PSSnapin [-Name] <string[]> [-PassThru] [<CommonParameters>]

Description
The Add-PSSnapin cmdlet adds registered Windows PowerShell snap-ins to the current session. After the snap-ins are added, you can use the cmdlets and providers that the snap-ins support in the current session.
    
To add the snap-in to all future Windows PowerShell sessions, add an Add-PSSnapin command to your Windows PowerShell profile. For more information, see about_Profiles.