functions/wmifilter/Get-DMWmiFilter.ps1

function Get-DMWmiFilter {
    <#
    .SYNOPSIS
        Returns all registered WMI filter definitions.
     
    .DESCRIPTION
        Returns all registered WMI filter definitions.
     
    .PARAMETER Name
        Name of the definition to filter by.
        Defaults to: *
     
    .EXAMPLE
        PS C:\> Get-DMWmiFilter
 
        Returns all registered WMI filter definitions.
    #>

    [CmdletBinding()]
    Param (
        [Parameter(ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]
        $Name = '*'
    )
    
    process {
        ($script:wmifilter.Values | Where-Object Name -Like $Name)
    }
}