Extract basic information about the operating system (kernel, system version, network address, etc.)

Function One: the ability to extract basic information about the operating system (kernel, system version, network address, etc.)

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#File Name:System_monitor.sh

#Author: Ivan

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#!/bin/bash

#把之前屏幕上的内容清除掉

Clear

if [[$#-eq 0]]

Then

Echo-e ' \e[33m ' "########## #系统分析 ##########"

#定义一个高亮输出的变量

output=$ (Tput sgr0)

#检查系统类型 using the Uname-o command

os=$ (Uname-o)

Echo-e ' \e[32m ' "System type:" $output $os

#获取操作系统版本类型

os_name=$ (cat/etc/issue |grep-ie "Server")

Echo-e ' \e[33m ' "System version:" $output $os _name

#获取CPU的指令集

os_bit=$ (UNAME-M)

Echo-e ' \e[34m ' "system bits:" $output $os _bit

#获取内核版本

os_kernel=$ (UNAME-R)

Echo-e ' \e[35m ' "kernel version:" $output $os _kernel

#获取主机名 $HOSTNAME and Uname-n can also be implemented

hostname=$ (hostname)

#获取内网ip

inner=$ (Hostname-i)

Echo-e ' \e[36m ' "Intranet IP:" $output $inner

#获取外网ip we simply use the information returned after requesting this HTTP address

outer=$ (Curl-s http://ipecho.net/plain)

Echo-e ' \e[29m ' "Extranet IP:" $output $outer

#获取DNS extract matches from/etc/resolv.conf file

nameservers=$ (cat/etc/resolv.conf |grep-e "\<nameserver[]" +|awk ' {print $NF} ')

Echo-e ' \e[31m ' "System DNS:" $output $nameservers

#判断网络连通性 test directly with the ping command

Ping-c 2 www.toutiao.com &>/dev/null && echo "Network connectivity: Yes" | | echo "Network connectivity: No"

#检查当前登录的用户 output to a temporary file using the WHO command

Who >/tmp/who

Echo-e ' \e[32m ' "currently logged in User:" $output && cat/tmp/who

#记得把临时文件给删掉

Rm-rf/tmp/who

echo "#############################"

# function Two: ability to analyze the operating state of the system (CPU load, memory and disk usage, etc.)

#使用free-M to view memory usage

#我们要取的是系统使用内存和应用使用内存

#系统使用内存 =total-free while applying memory =total-(free+buffers+cached)

#在/proc/meminfo file is a directory of memory conditions

#获取系统已经使用的内存通过awk命令文本进行提取然后计算出结果换算成Mb

system_men=$ (awk '/memtotal/{total=$2}/memfree/{free=$2}end{print (total-free)/1024} '/proc/meminfo)

#获取应用使用内存通过awk命令文本进行提取然后计算出结果换算成Mb

app_men=$ (awk '/memtotal/{total=$2}/memfree/{free=$2}/^cached/{cached=$2}/buffers/{buffers=$2}end{print ( total-free-cached-buffers)/1024} '/proc/meminfo)

#打印出结果

Echo-e ' \e[36m ' system uses memory: "$output $system _men" M "

Echo-e ' \e[36m ' "Application uses memory:" $output $app _men "M"

# The next step is to operate the system CPU load this piece, we can use the top command to view

#top-N 1-b|grep "load average:"

#再使用awk进行空格划分提取我们想要的load Average

#top-N 1-b|grep "load average:" |awk ' {print $ $13 $14} '

load_average=$ (top-n 1-b|grep "load average:" |awk ' {print $ $13 $14} ')

Echo-e ' \e[33m ' "Load Condition:" $output $load _average

# Finally the disk analysis, the usual, first we use the df-h command to see

# Before we can format it and output it

#df-hp|grep-ve ' Filesystem|tmpfs ' |awk ' {print $ ' Size: ' $ $ ' used: ' $ $ ' use%: ' $ $ '

disk=$ (df-hp|grep-ve ' Filesystem|tmpfs ' |awk ' {print $ "total:" $ "used:" $ $ "Usage:" $ ")

Echo-e ' \e[34m ' "Disk condition:" $output $disk

Else

echo "Please do not pass parameters!" "

Fi

Note: The red font can not be added to the script

Post-run Effects:

########## #系统分析 ##########

System Type: Gnu/linux

System version: CentOS release 6.6 (Final)

Number of system bits: x86_64

Kernel version: 2.6.32-504.el6.x86_64

Intranet ip:172.16.1.237

External network ip:x.x.x.x

System dns:8.8.8.8 211.136.192.6

Network connectivity: Yes

Currently logged in User:

Root PTS/1 2017-01-12 20:14 (x.x.x.x)

#############################

System use Memory: 3387.73M

Applications use Memory: 1084.01M

Load Condition: 0.00,0.00,0.00

Disk Condition:/dev/mapper/vg_itcacti-logvol00 total: 287G used: 3.9G usage: 2%/dev/sda1 total: 477M used: 32M usage: 8%

This article is from the IT Operations Information blog, please be sure to keep this source http://aqiang.blog.51cto.com/6086626/1891584

Extract basic information about the operating system (kernel, system version, network address, etc.)