<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><Request RequestType=\"OneStep\"><Transaction Subsystem=\"98768\"/><ClientKeys MSISDN=\"324223232118\"/><Operation OperationType=\"Riconf\"/></Request>
<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><Request RequestType=\"OneStep\"><Transaction Subsystem=\"87657\"/><ClientKeys MSISDN=\"132323232115\"/><Operation OperationType=\"Trifoi\"/></Request>
<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><Request RequestType=\"OneStep\"><Transaction Subsystem=\"75765\"/><ClientKeys MSISDN=\"11113232115\"/><Operation OperationType=\"Martif\"/></Request>
<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><Request RequestType=\"OneStep\"><Transaction Subsystem=\"11222\"/><ClientKeys MSISDN=\"113422323211\"/><Operation OperationType=\"Riconf\"/></Request>

in questo file devo cercare tutte le righe che abbiano Subsystem=87657 e OperationType=Riconf ,in ogni riga trovata con questi due valori mi deve stampare a video di quelle righe il valore dell MSISDN