[Fors1k]

Код:

$Date = Get-Date
$creation_time_lt = -1
$creation_time_ge = -2
$wObject_options  = {
    $_.creationtime -lt $Date.AddDays($creation_time_lt) -and 
    $_.creationtime -ge $Date.AddDays($creation_time_ge)
}

Get-ChildItem "С:\test" -Recurse | Where-Object $wObject_options