python练习题（四）

写一个脚本，判断本机的80端口是否开启着，如果开启着什么都不做，如果发现端口不存在，那么重启一下httpd服务，并发邮件通知你自己。脚本写好后，可以每一分钟执行一次，也可以写一个死循环的脚本，30s检测一次。

#!/usr/bin/env python

#!coding=utf-8

import os

import time

import sys

import smtplib

from email.mime.text import MIMEText

from email.MIMEMultipart import MIMEMultipart

def sendsimplemail (warning):

msg = MIMEText(warning)

msg[‘Subject‘] = ‘python first mail‘

msg[‘From‘] = ‘[email protected]‘

try:

smtp = smtplib.SMTP()

smtp.connect(r‘smtp.126.com‘)

smtp.login(‘[email protected]‘, ‘13716370012‘)

smtp.sendmail(‘[email protected]‘, [‘[email protected]‘], msg.as_string())

smtp.close()

except Exception, e:

print e

while True:

http_status = os.popen(‘netstat -tulnp | grep httpd‘,‘r‘).readlines()

try:

if http_status == []:

os.system(‘service httpd start‘)

new_http_status = os.popen(‘netstat -tulnp | grep httpd‘,‘r‘).readlines()

str1 = ‘‘.join(new_http_status)

is_80 = str1.split()[3].split(‘:‘)[-1]

if is_80 != ‘80‘:

print ‘httpd 启动失败‘

else:

print ‘httpd 启动成功‘

sendsimplemail(warning = "This is a warning!!!")

else:

print ‘httpd正常‘

time.sleep(5)

except KeyboardInterrupt:

sys.exit(‘\n‘)