在Mac OS下通过shell script做ping循环测试
通过shell script做ping循环测试系统环境：
操作系统： MAC OS
一个有意思，且有用的系统维护脚本，通过shell script 测试网络主机的连通性：
$cat ping.sh
#!/bin/bash
for i in `seq 254`
do
ip=192.168.1.$i
ping -c1 $ip >/dev/null 2>&1
[ $? -eq 0 ] && echo "$ip is alive" || echo "$ip is not alive"
done
$sh ping.sh
192.168.1.1 is alive
192.168.1.2 is not alive
192.168.1.3 is not alive
192.168.1.4 is not alive
192.168.1.5 is not alive
192.168.1.6 is not alive
另转：
用shell脚本实现ping网段中的所有主机:
#!/bin/sh
# ping all host
# edit by www.jbxue.com
# find from /etc/hosts for host info,and filter IP address
cat /etc/hosts | grep -v ^# |grep -v ^$ | while read LINE
do
for M in `awk '{print $1}'`
do
if ping -w 1 -c 1 $M | grep "100%" >/dev/null
then
echo "$M is down"
else
echo "$M is up"
fi
done
done
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