其实获取系统信息，如果使用python的psutil的模块，更加的简洁好用。自己写的这个脚本算是一个python练习。

#!/usr/bin/env python2.7
# -*- coding:utf-8 -*-
import os
import subprocess
import re
import hashlib
#对字典取子集
def sub_dict(form_dict, sub_keys, default=None):return dict([(k, form_dict.get(k.strip(), default)) for k in sub_keys.split(',')])
#读取cpuinfo信息
# dmidecode -t 4
def read_cpuinfo():cpu_stat = []with open('/proc/cpuinfo', 'r') as f:data = f.read()for line in data.split('\n\n'):cpu_stat.append(line)return cpu_stat[-2]
#读取fdisk信息
def read_fdisk():p = subprocess.Popen('fdisk -l', stdout=subprocess.PIPE, shell=True)out = p.communicate()[0]info = []for i in out.split('\n\n'):for x in i.splitlines():if x:info.append(x)return info
#读取dmidecode信息
def read_dmidecode():p = subprocess.Popen('dmidecode -t 1', stdout=subprocess.PIPE, shell=True)return p.communicate()[0]
#读取ifconfig信息
def read_ifconfig():p = subprocess.Popen('ifconfig', stdout=subprocess.PIPE, shell=True)return p.communicate()[0]
#返回cpu信息：CPU型号、颗数、核数
def get_cpuinfo(data):cpu_info = {}for i in data.splitlines():k, v = [x.strip() for x in i.split(':')]cpu_info[k] = vcpu_info['physical id'] = str(int(cpu_info.get('physical id')) + 1)return sub_dict(cpu_info, 'model name,physical id,cpu cores')
#返回每块硬盘大小
def get_diskinfo(data):disk_info = {}m_disk = re.compile(r'^Disk\s/dev')for i in data:if m_disk.match(i):i = i.split(',')[0]k, v = [x for x in i.split(':')]disk_info[k] = vreturn disk_info
#返回硬件信息：品牌、型号
def get_dmiinfo(data):dmi_info = {}line_in = Falsefor line in data.splitlines():if line.startswith('System Information'):line_in = Truecontinueif line.startswith('\t') and line_in:k, v = [i.strip() for i in line.split(':')]dmi_info[k] = velse:line_in = Falsereturn sub_dict(dmi_info, 'Manufacturer,Product Name,Serial Number')
#返回网卡及ip信息：网卡、IP址、MAC地址
def get_ipinfo(data):data = (i for i in data.split('\n\n') if i and not i.startswith('lo'))ip_info = []ifname = re.compile(r'(eth[\d:]*|wlan[\d:]*)')ipaddr = re.compile(r'(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[0-9]{1,2})){3}')macaddr = re.compile(r'[A-F0-9a-f:]{17}')for i in data:x = {}if ifname.match(i):device = ifname.match(i).group()x['Adapter'] = deviceif macaddr.search(i):mac = macaddr.search(i).group()x['MAC'] = macif ipaddr.search(i):ip = ipaddr.search(i).group()x['IP'] = ipelse:x['IP'] = Noneip_info.append(x)return ip_info
#返回内存及swap大小
def get_meminfo():mem_info = {}with open('/proc/meminfo', 'r') as f:data = f.readlines()for i in data:k, v = [x.strip() for x in i.split(':')]mem_info[k] = int(v.split()[0])return sub_dict(mem_info, 'MemTotal,SwapTotal')
#返回操作信息
def get_osinfo():os_info = {}i = os.uname()os_info['os_type'] = i[0]os_info['node_name'] = i[1]os_info['kernel'] = i[2]return os_info
#唯一标识符
def get_indentity(data):match_serial = re.compile(r"Serial Number: .*", re.DOTALL)match_uuid = re.compile(r"UUID: .*", re.DOTALL)if match_serial.search(data):serial = match_serial.search(data).group()if match_uuid.search(data):uuid = match_uuid.search(data).group()if serial:serial_md5 = hashlib.md5(serial).hexdigest()return serial_md5elif uuid:uuid_md5 = hashlib.md5(uuid).hexdigest()return uuid_md5
if __name__ == "__main__":ipinfo = get_ipinfo(read_ifconfig())dmiinfo = get_dmiinfo(read_dmidecode())cpuinfo = get_cpuinfo(read_cpuinfo())diskinfo = get_diskinfo(read_fdisk())meminfo = get_meminfo()osinfo = get_osinfo()identity = get_indentity(read_dmidecode())