[root@ mysql-master ~]# ip a|grep eth0|grep inet|cut -d' ' -f6|cut -d'/' -f1

 10.0.0.21

 [root@ mysql-master ~]# ifconfig eth0 |grep 'inet addr'|cut -d':' -f2|cut -d' ' -f1

 10.0.0.21

 #!/bin/bash

 function system(){

 echo "#########################系统信息#########################"

 OS_TYPE=`uname`

 OS_VER=`cat /etc/redhat-release`

 OS_KER=`uname -a|awk '{print $3}'`

 OS_TIME=`date +%F_%T`

 OS_RUN_TIME=`uptime |awk '{print $3}'|awk -F, '{print $1}'`

 OS_LAST_REBOOT_TIME=`who -b|awk '{print $2,$3}'`

 OS_HOSTNAME=`hostname`

 echo "    系统类型：$OS_TYPE"

 echo "    系统版本：$OS_VER"

 echo "    系统内核：$OS_KER"

 echo "    当前时间：$OS_TIME"

 echo "    运行时间：$OS_RUN_TIME"

 echo "最后重启时间：$OS_LAST_REBOOT_TIME"

 echo "    本机名称：$OS_HOSTNAME"

 }

 function network(){

 echo "#########################网络信息#########################"

 INTERNET=(`ifconfig|grep ens|awk -F: '{print $1}'`)   # centos6 ifconfig | grep Bcast | awk '{print $2}' | awk -F : '{print $2}'

 for((i=;i<`echo ${#INTERNET[*]}`;i++))

 do

   OS_IP=`ifconfig ${INTERNET[$i]}|head -|grep inet|awk '{print $2}'`

   echo "      本机IP：${INTERNET[$i]}:$OS_IP"

 done

 curl -I http://www.baidu.com &>/dev/null # 测试

 if [ $? -eq  ]

     then echo "    访问外网：成功"

 else

     echo "    访问外网：失败"

 fi

 }

 function hardware(){

 echo "#########################硬件信息#########################"

 CPUID=`grep "physical id" /proc/cpuinfo |sort|uniq|wc -l`

 CPUCORES=`grep "cores" /proc/cpuinfo|sort|uniq|awk -F: '{print $2}'`

 CPUMODE=`grep "model name" /proc/cpuinfo|sort|uniq|awk -F: '{print $2}'`

 echo "     CPU数量: $CPUID"

 echo "     CPU核心:$CPUCORES"

 echo "     CPU型号:$CPUMODE"

 MEMTOTAL=`free -m|grep Mem|awk '{print $2}'`

 MEMFREE=`free -m|grep Mem|awk '{print $7}'`

 echo "  内存总容量: ${MEMTOTAL}MB"

 echo "剩余内存容量: ${MEMFREE}MB"

 disksize=

 swapsize=`free|grep Swap|awk {'print $2'}`

 partitionsize=(`df -T|sed 1d|egrep -v "tmpfs|sr0"|awk {'print $3'}`)

 for ((i=;i<`echo ${#partitionsize[*]}`;i++))

 do

 disksize=`expr $disksize + ${partitionsize[$i]}`

 done

 ((disktotal=\($disksize+$swapsize\)//))

 echo "  磁盘总容量: ${disktotal}GB"

 diskfree=

 swapfree=`free|grep Swap|awk '{print $4}'`

 partitionfree=(`df -T|sed 1d|egrep -v "tmpfs|sr0"|awk '{print $5}'`)

 for ((i=;i<`echo ${#partitionfree[*]}`;i++))

 do

 diskfree=`expr $diskfree + ${partitionfree[$i]}`

 done

 ((freetotal=\($diskfree+$swapfree\)//))

 echo "剩余磁盘容量：${freetotal}GB"

 }

 function secure(){

 echo "#########################安全信息#########################"

 countuser=(`last|grep "still logged in"|awk '{print $1}'|sort|uniq`)

 for ((i=;i<`echo ${#countuser[*]}`;i++))

 do echo "当前登录用户：${countuser[$i]}"

 done

 md5sum -c --quiet /opt/passwd.db &>/dev/null

 if [ $? -eq  ]

 then echo "    用户异常：否"

 else echo "    用户异常：是"

 fi

 }

 function chksys(){

 system

 network

 hardware

 secure

 }
　　chksys