Use of uninitialized value in hash element at TEST.pl line 17, <$fh> line 4. Use of uninitialized value in hash element at TEST.pl line 18, <$fh> line 4. Use of uninitialized value in hash element at TEST.pl line 17, <$fh> line 5. Use of uninitialized value in hash element at TEST.pl line 20, <$fh> line 5. KEY in File1 not found in File2 KEY in File1 not found in File2 KEY 155369268: File2 string length too short for File1 position value KEY 155369268: File2 string length too short for File1 position value KEY 269212605: File2 string length too short for File1 position value