working with powershell

testing.ps1

$collection = New-Object System.Collections.ArrayList
$GroupedIP = New-Object System.Collections.ArrayList
$counter
$start = 0
$finish = 0
Do {
    if ($file[$counter].'Source IP' -eq $file[$counter+1].'Source IP'){
      $collection.Add($file[$counter]) | Out-Null
      $finish++
}
    else{
      # $GroupedIP.Add($file[$counter-1].'Source IP')
      write-host "$start --- $finish"
      $GroupedIP.Add($collection[$start..$finish].'Source IP')
      $start = $finish
    }

  $counter ++
}
while($counter -le $file.Length)

foreach ($x in $GroupedIP){
  write-host $x
}
set-location $homeLocation