loop_nslookup

 function loop_nslookup() {
     $baseFolder = "D:\ps_toolkit"
     $ip_list = "$baseFolder\ip_list.txt"
     $cmd = "C:\Windows\System32\nslookup.exe"
     $reader = [System.IO.File]::OpenText($ip_list)
     $reader.GetType()
     while($null -ne ($line = $reader.ReadLine())) {
         $arg1 = $line.Trim()
         if("".Equals($arg1) -or $arg1.StartsWith("#")){
             continue
         }
         & $cmd $arg1
         #write-host "[$cmd] - [$arg1]"
         write-host "====="
     }
     $reader.Close()
 }