CmdID

CmdID / PowerShell / Cmdlets / Get

Get-WebApplication

Gets the web applications associated with a specific site or with a specified name. Windows Server PowerShell reference

From the Windows Server PowerShell reference 2 parameters Its page in the reference

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Parameters

2 in the Windows Server PowerShell reference
-NameSpecifies the name of the web application for which information is returned.
-SiteSpecifies the name of the site for which this cmdlet returns application information.