$ sudo time ./multiping.pl
Reply time for 10.100.19.1 - 3.007 seconds
Reply time for 10.100.19.50 - 3.000 seconds
Reply time for 10.100.19.85 - 2.994 seconds
Reply time for 10.100.19.87 - 2.993 seconds
Reply time for 10.100.19.200 - 2.971 seconds
PONG: 10.100.19.1
PONG: 10.100.19.50
PONG: 10.100.19.85
PONG: 10.100.19.87
PONG: 10.100.19.200
0.15user 0.02system 0:04.11elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (394major+191minor)pagefaults 0swaps