parallel_ping_with_output_race

gistfile1.sh

$ time cat /tmp/pinglist | xargs --max-args=1 --max-procs=10 -IZ   ping -c 1 Z
PING 127.0.0.2 (127.0.0.2) 56(84) bytes of data.
PING 192.168.127.120 (192.168.127.120) 56(84) bytes of data.
PING 192.168.122.1 (192.168.122.1) 56(84) bytes of data.
PING 10.10.10.50 (10.10.10.50) 56(84) bytes of data.
64 bytes from 192.168.127.120: icmp_req=1 ttl=64 time=0.043 ms

--- 192.168.127.120 ping statistics ---
64 bytes from 192.168.122.1: icmp_req=1 ttl=64 time=0.034 ms
64 bytes from 127.0.0.2: icmp_req=1 ttl=64 time=0.043 ms
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.

--- 192.168.122.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.034/0.034/0.034/0.000 ms
PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
1 packets transmitted, 1 received, 0% packet loss, time 0ms

--- 127.0.0.2 ping statistics ---
64 bytes from 192.168.100.1: icmp_req=1 ttl=64 time=0.074 ms
rtt min/avg/max/mdev = 0.043/0.043/0.043/0.000 ms
1 packets transmitted, 1 received, 0% packet loss, time 0ms
64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.077 ms


--- 127.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.077/0.077/0.077/0.000 ms
rtt min/avg/max/mdev = 0.043/0.043/0.043/0.000 ms
--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.074/0.074/0.074/0.000 ms
From 41.223.35.4 icmp_seq=1 Time to live exceeded

--- 10.10.10.50 ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms


real	0m0.047s
user	0m0.000s
sys	0m0.000s