ChildProcess

ChildProcess.psm1

function Stop-ChildProcess {
    [CmdletBinding(SupportsShouldProcess=$true)]
    param(
        [Parameter(ValueFromPipelineByPropertyName=$true, ParameterSetName="Name")]
        [String[]]$Name,
        
        [Parameter(ValueFromPipelineByPropertyName=$true, ParameterSetName="ID")]
        [Alias("ProcessID")]
        [Int[]]$ID,

        [Switch]$IncludeParent
    )

    process {
        $null = $PSBoundParameters.Remove("IncludeParent")
        Get-ChildProcess @PSBoundParameters -Passthru:$IncludeParent | Stop-Process
    }
}


function Get-ChildProcess { 
    [CmdletBinding(SupportsShouldProcess=$true, DefaultParameterSetName="ID")]
    param(
        [Parameter(ValueFromPipelineByPropertyName=$true, ParameterSetName="Name", Position=0)]
        [String[]]$Name,
        
        [Parameter(ValueFromPipelineByPropertyName=$true, ParameterSetName="ID", Position=0)]
        [Alias("ProcessID")]
        [Int[]]$ID,

        [Switch]$Passthru
    )
    process {
        $(
            $null = $PSBoundParameters.Remove("Passthru")
            foreach($ID in Get-Process @PSBoundParameters | % Id) {
                Get-WmiObject Win32_Process -Filter "ParentProcessID=${ID}" | Select ProcessID
            }
        ) | Get-ChildProcess -Passthru
        if($Passthru) {
            Get-Process @PSBoundParameters
        }
    }
}