检测主机存活状态脚本

#!/bin/bash
# Simple SHELL script for Linux and UNIX system monitoring with
# ping command

# add ip / hostname separated by while space
HOSTS="host-ip"

# no ping request
COUNT=1

# email report when
SUBJECT="Ping failed"
EMAILID=""
for myHost in $HOSTS
do
  count=$(ping -c $COUNT $myHost | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
    if [ $count -eq 0 ]; then
        # 100% failed
            echo "Host : $myHost is down (ping failed) at $(date)" | mail -s "$SUBJECT" $EMAILID
             else
                echo "$1 is up "
                 fi
              done