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This article mainly introduces how to detect whether the server is connected to the network in Linux, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article.

Linux detects whether the server is connected to the network

Abstract: check whether the server is connected to the network every 5 minutes, if there is no network after three tests. The machine is automatically turned off! Main usage scenarios: because you have a server in your remote hometown, you may encounter the problem of network outage caused by a power outage, and the use of UPS is limited after a power outage. Therefore, this script is designed to solve various problems caused by a sudden power outage of the server. When the network goes down after a power outage, the server needs to be shut down automatically. Of course, you need to start the server manually after an incoming call!

#! / bin/bash# detects whether the server is connected to the network If the network does not work, shut down the computer # crontab-e# / 5 *. / check.shecho "Starting test network was clear..." if test-e. / checkInfo then echo "CheckInfo File Exist..." else cat / dev/null >. / checkInfofilast_res= `head-1. / ch eckInfo`checkInternet () {ping_res=1 for url in "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} checkInternetresult=" $? "if [${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" >. / checkInfofi else cat / dev/null >. / checkInfofi thank you for reading this article carefully I hope the article "how to detect whether the server is connected to the network in Linux" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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