Powershell Find user is logged in where

clear
$ErrorActionPreference = "SilentlyContinue"
$net=2
while($net -le 3)
{
$i=2
while($i -le 254)
{
$ipp=$i.ToString()
$ntt=$net.ToString()
$pre="192.168."+$ntt+"." + $ipp
$mn=[Net.IPAddress]::Parse($pre)
write-host $mn
query session /server:$mn
echo "================"
$i=$i+1
}
$net=$net+1
}