Shell Scripts-Monitor network conditions

#!/bin/bash# -------------------------------------------------------------------------------#  filename:    networkchecking# revision:    2.0# date:         2017/09/14# author:      xad#  Email:       [email protected]# Website:      http://onenice.blog.51cto.com/# description: check network and sendmail  to XAD , wirte executing log# Notes:        ~# -------------------------------------------------------------------------------# copyright:    2017 (c) xad# license:     gpldomain1=www.baidu.comdomain2= Www.google.comDATE= ' date  "+%f %h:%m:%s" ' host= ' hostname ' ipaddress= ' ifconfig eth0| grep   "INET ADDR:"  | awk -f[: " "]+  ' {print $4} ' # #打印成功日志 # #log_info () {    if [ !  -x /var/log/$0 ];then        mkdir /var/log/$0     fi        echo  "$DATE   $HOST  $ ipaddress  $USER  execute  $0 >> $1 " >> /var/log/$0/ success.log}# #打印错误日志 # #log_error () {    if [ ! -x /var/log/$0 ]; then        mkdir /var/log/$0    fi         echo  $DATE   $HOST   $IPADDRESS   $USER  execute  $0 >> $1 " >>/var/log/$0/error.log}# #检测网络是否通畅 # #check_network () {     ping -c 2  $DOMAIN 1 > /dev/null    pingstatus1=$?     echo -n&nBSP; $pingstatus 1 > /tmp/netwok-status    if [  $pingstatus 1 -eq  0 ];then        log_info  "network to $ Domain1 is ok "    else        log_error   "network to  $DOMAIN 1 is error"     fi         ping -c 2  $DOMAIN 2 > /dev/null     pingstatus2=$?    echo -n  $pingstatus 2 >> /tmp/netwok-status     if [  $pingstatus 2 -eq 0 ];then         log_info  "network to  $DOMAIN 2 is ok"     else         log_error  "network to  $DOMAIN 2 is  Error "    fi}# #发Send alert message and output send log # #sendmail () {    status= ' cat /tmp/netwok-status '      if [  "$STATUS"  -eq 11 ]; then         echo  "Time: $DATE  hostname: $HOST  ip: $IPADDRESS  Network is normal! "  |  mail -s  "please check your network now!"  [email protected]        if [ $? -eq 0  ];then            echo  "$DATE  $ host  $IPADDRESS   $USER  >> sendmail is ok ! "  >> /var/log/$0/sendmail.log        else             echo  "$DATE   $HOST   $IPADDRESS  $ user >> sendmail is error ! "  >> /var/log/$0/sendmail.log        fifi}check_networksendmail 

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Shell Scripts-Monitor network conditions