获取系统内核版本,linux发行版,IP地址，内存，cpu，磁盘使用率

#!/bin/bash
LAN_IP=`curl -s cip.cc`
LAN_IP=`echo $LAN_IP |awk  '{print $3}'`
MEM=`free -m|grep "Mem:"| awk '{print $3/$2*100}'`
echo "当前的虚拟平台: "$(hostnamectl |grep Virtualization|awk -F ": " '{print $2}')
echo "当前的内核版本: "$(hostnamectl |grep Kernel|awk -F ": " '{print $2}')
echo "当前的Linux发行版本: " $(hostnamectl |grep Operating|awk -F ": " '{print $2}')
echo "当前的外网 IP地址：" $LAN_IP
echo "当前的eht0 IP地址: " $(ifconfig eth0|grep "inet " |awk '{print $2}')
echo "当前cpu的使用率: " $(top -n 1 |grep Cpu |awk '{print $2}')
echo "当前内存的使用率: " $(echo $MEM | sed 's/..$//'|awk '{print $0"%"}')
echo "当前磁盘的使用率: "$(df -h |grep mapper |awk '{print $5}')