#!/bin/sh ramusage=$(free | awk '/Mem/{printf("RAM Usage: %.2f\n"), $3/$2*100}'| awk '{print $3}') if [ "$ramusage" > 20 ]; then SUBJECT="ATTENTION: Memory Utilization is High on $(hostname) at $(date)" MESSAGE="/tmp/
1 要监视一台Linux主机,需要在被监控的主机上安装net-snmp相关软件包,CentOS安装可使用“yum -y install net-snmp”命令:# yum -y install net-snmpSetting up Install ProcessSetting up repositoriesReading repository metadata in from local filesParsing package install argumentsResolving Depend