parallel_ping_with_output_race_fixed

gistfile1.txt

$ time cat /tmp/pinglist | xargs --max-args=1 --max-procs=10 -IZ flock -x /tmp/pinglist -c "ping -c 1 Z; echo"
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_req=1 ttl=64 time=0.096 ms

--- 127.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.096/0.096/0.096/0.000 ms

PING 192.168.122.1 (192.168.122.1) 56(84) bytes of data.
64 bytes from 192.168.122.1: icmp_req=1 ttl=64 time=0.091 ms

--- 192.168.122.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.091/0.091/0.091/0.000 ms

PING 192.168.127.120 (192.168.127.120) 56(84) bytes of data.
64 bytes from 192.168.127.120: icmp_req=1 ttl=64 time=0.105 ms

--- 192.168.127.120 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.105/0.105/0.105/0.000 ms

PING 127.0.0.2 (127.0.0.2) 56(84) bytes of data.
64 bytes from 127.0.0.2: icmp_req=1 ttl=64 time=0.126 ms

--- 127.0.0.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.126/0.126/0.126/0.000 ms

PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_req=1 ttl=64 time=0.089 ms

--- 192.168.100.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.089/0.089/0.089/0.000 ms

PING 10.10.10.50 (10.10.10.50) 56(84) bytes of data.
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	0m0.105s
user	0m0.008s
sys	0m0.012s