思路是：通过循环，去ping主机地址
用$?来判断上次命令是否成功得出主机是否存在

代码如下：

#!/bin/bash
 
for i in `seq 10`
do
    ip=192.168.113.$i
    ping -c 2 $ip > /dev/null 2>&1
    [ $? -eq 0 ] && echo "$ip is alive"  || echo "$ip is not alive"
done

结果：

[root@localhost shell]# sh 3.sh
192.168.113.1 is not alive
192.168.113.2 is alive
192.168.113.3 is not alive
192.168.113.4 is not alive
192.168.113.5 is not alive
192.168.113.6 is not alive
192.168.113.7 is not alive
192.168.113.8 is not alive
192.168.113.9 is not alive
192.168.113.10 is not alive

之前有写过，有一个叫fping工具的。
也是批量的功能，详细见ping的加强版fping