核心代码：

#!/usr/bin/python
# -*- coding: UTF-8 -*-


import smtplib
import os
import commands,time 
from email.mime.text import MIMEText
#from email import MIMEText
disk_free=os.popen(\'df -lh\')
list_disk=disk_free.read()
mailto_list=[\"2880329185@qq.com\",\"2881280685@qq.com\",\"2880089704@qq.com\",\"2880329180@qq.com\"]
mail_host=\"smtp.139.com\" 
mail_user=\"user\"  
mail_pass=\"password\"  
mail_postfix=\"jljgl@.com\" 
use01=commands.getstatusoutput(\"df -lh|awk \'{print $4}\'|grep \'%\'|awk -F \'%\' \'{print $1}\'|grep -v Use\")
use02=commands.getstatusoutput(\"df -lh|awk \'{print $5}\'|grep \'%\'|awk -F \'%\' \'{print $1}\'|grep -v Use\")
getrecord=commands.getstatusoutput(\"cat /home/oracle/script/mail.log|awk \'{print $1}\'\")
gettime=commands.getstatusoutput(\"cat /home/oracle/script/mail.log|awk \'{print $2}\'\")


free01=use01[1]
free02=use02[1]+\'\\n\'+use01[1]
new_time=time.strftime(\"%Y%m%d\", time.localtime())


def send_mail(to_list,sub,content):
  me=mail_postfix
  msg = MIMEText(content,_subtype=\'plain\',_charset=\'gb2312\')
  msg[\'Subject\'] = sub
  msg[\'From\'] = me
  msg[\'To\'] = \";\".join(to_list)
  try:
    server = smtplib.SMTP()
    server.connect(mail_host)
    server.login(mail_user,mail_pass)
    server.sendmail(me, to_list, msg.as_string())
    server.close()
    return True
  except SyntaxError:
    pass
    return False
if __name__ == \'__main__\':
    if free02>30:
        id=0
        if new_time>gettime[1]:
            while 1:
                getrecord=commands.getstatusoutput(\"cat /home/oracle/script/mail.log|awk \'{print $1}\'\")
                id=id+1
                \'\'\'
                jl=open(\'/home/oracle/script/dd.log\')
                record=jl.read()
                \'\'\'
                line_l=str(id)+\' \'+new_time




                df=open(\'/home/oracle/script/mail.log\',\'w\')
                df.writelines(line_l)
                df.close()
                
                if send_mail(mailto_list,\"hello\",list_disk):
                    print \"发送成功\"
                else:
                    print \"发送失败\"
                if getrecord[1]>0:
                    break
        else:
            line_m=str(0)+\' \'+new_time
            free=open(\'/home/oracle/script/mail.log\',\'w\')
            free.writelines(line_m)
            free.close()