Adding Windows PowerShell Cmdlets

 You may all have seen some error like below when running a command on Windows PowerShell. This usually occurs when the command PowerShell snap-in is not added.

The term 'Get-SPWebApplication' is not recognized as the name of a cmdlet, function, script file, or operable program.

Solution:  How to add the required snap-in if not already added from the PowerShell script itself.

# Example to add SharePoint Cmdlets [ SharePoint should be installed on machine ]

if ( (Get-PSSnapin -Name Microsoft.Sharepoint.Powershell -ErrorAction SilentlyContinue) -eq $null )

{

    Add-PsSnapin Microsoft.Sharepoint.Powershell

    Write-Output "`n Snap-in Microsoft.SharePoint.PowerShell added."

}

else

{

    Write-Output "`n Snap-in Microsoft.SharePoint.PowerShell already added."

} 

# Example to add SQL Cmdlets [ SQL management tools should be installed on machine ]

if ( (Get-PSSnapin -Name SqlServerCmdletSnapin100 -ErrorAction SilentlyContinue) -eq $null )

{

    Add-PsSnapin SqlServerCmdletSnapin100

    Write-Output "`n Snap-in SqlServerCmdletSnapin100 added."

}

else

{

    Write-Output "`n Snap-in SqlServerCmdletSnapin100 already added."

}

if ( (Get-PSSnapin -Name SqlServerProviderSnapin100 -ErrorAction SilentlyContinue) -eq $null )

{

    Add-PsSnapin SqlServerProviderSnapin100

    Write-Output "`n Snap-in SqlServerProviderSnapin100."

}

else

{

    Write-Output "`n Snap-in SqlServerProviderSnapin100 already added."

}