CFP MBCrump

Test-DivisibleByThree

function Test-DivisibleByThree {
    [CmdletBinding()]
    [OutputType([String])]
    Param (
        [Parameter(Mandatory=$true,
            ValueFromPipeline = $true,
            ValueFromPipelineByPropertyName = $true)]
        $String
    )

    process {
        if ((($_ -replace '[^0]').length % 3) -eq 0) {
            'divisible by three'
        }
        else {
            'not divisible'
        }
    }
}

Get-ChildItem -Path $file | % {
    $_ | Test-DivisibleByThree
}