批量检测主机存活状态

#!/bin/bash
PREFIX=192.168.1
 NODE=116
 while [ "$NODE" -lt "255" ]
 do
        echo -en "Pinging ${PREFIX}.${NODE}..."
        ping -c1 -w1 -t5 ${PREFIX}.${NODE} >/dev/null 2>&1
        if [ "$?" -eq "0" ]; then
                echo "OK"
        else
                echo "Failed"
        fi
        let NODE=$NODE+1
 done