linux： 禁ping
vim /proc/sys/net/ipv4/icmp_echo_ignore_all
0 代表允许 1代表禁止
ping.sh
#!/bin/bash
for i in {2..5};
do
host=122.152.172.$i
ping -c2 $host >/dev/null
if [ $? = 0 ]
then
echo "122.152.172.$i is connected"
else
echo "122.152.172.$i is not connected"
fi
done显示结果：
[root@primary_server workspace]# ./ping.sh 122.152.172.1 is connected 122.152.172.2 is connected 122.152.172.3 is connected 122.152.172.4 is not connected 122.152.172.5 is not connected
