一键查看服务器利用率

#!/bin/bash
function cpu(){
 
 util=$(vmstat | awk '{if(NR==3)print $13+$14}')
 iowait=$(vmstat | awk '{if(NR==3)print $16}')
 echo "CPU -使用率：${util}% ,等待磁盘IO相应使用率：${iowait}:${iowait}%"
 
}
function memory (){
 
 total=`free -m |awk '{if(NR==2)printf "%.1f",$2/1024}'`
   used=`free -m |awk '{if(NR==2) printf "%.1f",($2-$NF)/1024}'`
   available=`free -m |awk '{if(NR==2) printf "%.1f",$NF/1024}'`
   echo "内存 - 总大小: ${total}G , 使用: ${used}G , 剩余: ${available}G"
}
disk(){
 
 fs=$(df -h |awk '/^\/dev/{print $1}')
   for p in $fs; do
       mounted=$(df -h |awk '$1=="'$p'"{print $NF}')
       size=$(df -h |awk '$1=="'$p'"{print $2}')
       used=$(df -h |awk '$1=="'$p'"{print $3}')
       used_percent=$(df -h |awk '$1=="'$p'"{print $5}')
       echo "硬盘 - 挂载点: $mounted , 总大小: $size , 使用: $used , 使用率: 
$used_percent"
   done
 
}
function tcp_status() {
   summary=$(ss -antp |awk '{status[$1]++}END{for(i in status) printf 
i":"status[i]" "}')
   echo "TCP连接状态 - $summary"
}
cpu
memory
disk
tcp_status