UPS电源下服务器自动关机脚本代码,Shell代码库,德仔网

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【Shell】 UPS电源下服务器自动关机脚本

作者:quarryman / 发布于2013/1/15/ 1225

#!/bin/sh

# halt command
HALT=halt

ping_host(){
    IP=$1
    time_out=$2
    count=3
    kernel=`uname -s`
    total_miss=0
    echo "install ups check host '${IP}' for (${time_out}) seconds"

    # ping host, if miss recieved packets, then add to total_miss
    while true 
    do
        case $kernel in
            VMkernel)            #esxi 5.1
                ret=`ping -c ${count} -W 1 ${IP}|grep 'packets transmitted'|sed 's/.*, \(.*\) packets received,.*/\1/'`
                ;;
            Darwin)            #MacOS X 10.7.4
                ret=`ping -c ${count} -W 1 ${IP}|grep 'packets transmitted'|sed 's/.*, \(.*\) packets received,.*/\1/'`
                ;;
            Linux)            #ubuntu 12.04
                ret=`ping -c ${count} -W 1 ${IP}|grep 'packets transmitted'|sed 's/.*, \(.*\) received,.*/\1/'`
                ;;
            *)
                echo "Unknown Architecture $kernel"
                exit 1
                ;;
        esac

        miss=$((count-ret))
        if [ $miss -eq $count ]; then
            total_miss=$((total_miss+miss))
            echo "total_miss: ${total_miss} --> ${time_out}"
        else
            total_miss=0
        fi
        
        # if miss count over limit, then halt the computer!!!
        if [ $total_miss -ge $time_out ]; then
            echo "SYSTEM WILL HALT AT '`date`'!!!"
            ${HALT}
            break;
        fi
    done
}

if [ $1 = "start" ]
then
    ping_host $2 $3
else
    echo "usage: sudo ./ups_check start 192.168.2.1 120"
fi

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