function system(){
echo "##########系統信息##########"
OS_TYPE=uname
OS_VER=cat /etc/redhat-release
OS_KER=uname -a|awk ‘{print $3}‘
OSTIME=`date +%F%T<br/>OS_RUN_TIME=uptime |awk ‘{print $3}‘|awk -F, ‘{print $1}‘<br/>OS_LAST_REBOOT_TIME=who -b|awk ‘{print $2,$3}‘<br/>OS_HOSTNAME=

echo " 系統類型：$OS_TYPE"
echo " 系統版本：$OS_VER"
echo " 系統內核：$OS_KER"
echo " 當前時間：$OS_TIME"
echo " 運行時間：$OS_RUN_TIME"
echo "最後重啟時間：$OS_LAST_REBOOT_TIME"
echo " 本機名稱：$OS_HOSTNAME"
}
function network(){

echo "############網絡信息############"

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數量: $CPUID"
echo " CPU核心:$CPUCORES"
echo " CPU型號:$CPUMODE"

MEMTOTAL=free -m|grep Mem|awk ‘{print $2}‘
MEMFREE=free -m|grep Mem|awk ‘{print $7}‘

echo " 內存總容量: ${MEMTOTAL}MB"
echo "剩余內存容量: ${MEMFREE}MB"

disksize=0
swapsize=free|grep Swap|awk {‘print $2‘}
partitionsize=(df -T|sed 1d|egrep -v "tmpfs|sr0"|awk {‘print $3‘})
for ((i=0;i<echo ${#partitionsize[*]};i++))
do
disksize=expr $disksize + ${partitionsize[$i]}
done
((disktotal=($disksize+$swapsize)/1024/1024))

echo " 磁盤總容量: ${disktotal}GB"

diskfree=0
swapfree=free|grep Swap|awk ‘{print $4}‘
partitionfree=(df -T|sed 1d|egrep -v "tmpfs|sr0"|awk ‘{print $5}‘)
for ((i=0;i<echo ${#partitionfree[*]};i++))
do
diskfree=expr $diskfree + ${partitionfree[$i]}
done

((freetotal=($diskfree+$swapfree)/1024/1024))

echo "剩余磁盤容量：${freetotal}GB"
}

function secure(){
echo "########安全信息##########"

countuser=(last|grep "still logged in"|awk ‘{print $1}‘|sort|uniq)
for ((i=0;i<echo ${#countuser[*]};i++))
do echo "當前登錄用戶：${countuser[$i]}"
done

md5sum -c --quiet /opt/passwd.db &>/dev/null
if [ $? -eq 0 ]
then echo " 用戶異常：否"
else echo " 用戶異常：是"
fi
}

function chksys(){
system
network
hardware
secure
}

用shell腳本實現企業日常巡檢