#!/bin/bash
#
[ $# -lt 1 ] && echo '可支持的选项：-avhcplrmtnL' && exit 0

#依赖cmd
rpm -q pstree &> /dev/null || yum install -y pstree &> /dev/null

#版本
k_version="`grep -oP '(?<=release )\d' /etc/centos-release`"
#本地地址
host_ip="`hostname -I|awk '{print $1}'`"
#cpu核数
cpu_num="`lscpu | awk '/^CPU\(s\):/{print $2}'` C"
#cpu使用率
cpu_percent="`echo "100-$(top -b -n1 | grep -oP '\d+\.\d+(?= id)')"|bc` %"
#cpu平均负载
cpu_load="`uptime|awk '{print $NF}'`"
#硬盘容量/剩余量
disk_root="`df -m|awk '$NF=="/"{print $2}'` / `df -m|awk '$NF=="/"{print $4}'` Mb"
disk_warn="`df -m|sed 1d|awk '{split($5,per,"%");if(per[1]>85){if($4<5000) print $4}}'` Mb"
#内存总量/剩余量
mem_info="`free -m|awk '/Mem:/{print $2}'` / `free -m|awk '/Mem:/{print $6+$5+$4}'` Mb"
#当前线程数
thread_now=`pstree -p|wc -l`
#当前连接数
conn_now=`ss -tn state established|wc -l`
#当前占用端口列表
port_list="`ss -tnl|sed 1d|awk 'split($4,port,":"){print port[2],port[4]}'|sed 's/ //g'|sort -un|sed ':t;N;s/\n/,/;b t'`"


while getopts :avscplrwmtnL opt
do
	case $opt in
	a) echo -e "版本:$k_version\n主机ip:$host_ip\n核数:$cpu_num\ncpu利用率:$cpu_percent\ncpu负载:$cpu_load\n根目录:$disk_root\n内存:$mem_info\n线程数:$thread_now\n连接数:$conn_now\n已占用端口:$port_list" | column -s: -t ;;
	v) echo system version: $k_version |column -s: -t ;;
	s) echo system address: $host_ip |column -s: -t ;;
	c) echo system cpu_num: $cpu_num |column -s: -t ;;
	p) echo cpuuse_percent: $cpu_percent |column -s: -t ;;
	l) echo cpu_load_value: $cpu_load |column -s: -t ;;
	r) echo diskfree_total: $disk_root |column -s: -t ;;
	m) echo mem_free_total: $mem_info |column -s: -t ;;
	t) echo sys_prom_total: $thread_now |column -s: -t ;;
	n) echo sys_connection: $conn_now |column -s: -t ;;
	L) echo sys_open_ports: $port_list |column -s: -t ;;
	?) echo "可支持的选项：-vhcplrmtnL"; exit 6
	esac
done
exit 0