Get-FormatFile.ps1

function Get-FormatFile {
    <#
    .Synopsis
        Gets format files
    .Description
        Gets loaded format files
    .Example
        Get-FormatFile
    .Example
        Get-FormatFile -OnlyFromModule
    .Example
        Get-FormatFile -OnlyBuildIn
    #>

    param(
    [Switch]$OnlyFromModule,
    [Switch]$OnlyBuiltIn,
    [Switch]$FromSnapins
    )

    process {
        if (-not $OnlyBuiltIn) {
            Get-Module |
                Select-Object -ExpandProperty ExportedFormatFiles |
                Get-Item
        }

        if (-not $OnlyFromModule -and
            -not $FromSnapins) {
            Get-ChildItem $psHome -Filter *.format.ps1xml
        } elseif ($FromSnapins) {
            Get-PSSnapin |
                Where-Object { $_.Formats } |
                ForEach-Object {
                    foreach ($f in $_.Formats) {
                        Get-Item "$($_.ApplicationBase)\$f"
                    }
                }

        }
    }
}