摘要: 每隔5分鐘檢測(cè)一次服務(wù)器是否連接著網(wǎng)絡(luò),如果三次檢測(cè)都沒(méi)有網(wǎng)絡(luò)?則自動(dòng)關(guān)機(jī)! 主要使用場(chǎng)景: 由于自己有一臺(tái)服務(wù)器放在偏遠(yuǎn)的老家,有可能會(huì)遇到停電導(dǎo)致斷網(wǎng)的問(wèn)題,并且停電后UPS使用時(shí)間也有限制, 因此設(shè)計(jì)此腳本為了解決停電的時(shí)候服務(wù)器突然斷電引起的各種問(wèn)題,當(dāng)停電后網(wǎng)絡(luò)也就不通了,此時(shí)需要自動(dòng)關(guān)閉服務(wù)器. 當(dāng)然,來(lái)電后需要手動(dòng)啟動(dòng)服務(wù)器!!!
#!/bin/bash # 檢測(cè)服務(wù)器是否連接著網(wǎng)絡(luò),如果網(wǎng)絡(luò)不通 則 3次后 關(guān)機(jī) # crontab -e # */5 * * * * ./check.sh echo "Starting test network was clear..." if test -e ./checkInfo then echo "CheckInfo File Exist..." else cat /dev/null > ./checkInfo fi last_res=`head -1 ./checkInfo` checkInternet(){ ping_res=1 for url in "8.8.8.8" "61.139.2.69" "114.114.114.114" "168.95.1.1" "223.5.5.5" "180.76.76.76" do echo "PING ${url}" ping=`ping -c 3 ${url}|awk 'NR==7 {print $4}'` if [ ${ping} -eq 0 ] then ping_res=1 else ping_res=2 fi if [ ${ping_res} -eq 2 ] then break fi done return ${ping_res} } checkInternet result="$?" if [ ${result} -eq 1 ] then if [ "${last_res}" = "1" ] then echo "2" > ./checkInfo elif [ "${last_res}" = "2" ] then cat /dev/null > ./checkInfo init 0 else echo "1" > ./checkInfo fi else cat /dev/null > ./checkInfo fi