查找出含有特定文件并且24小时内有更新的目录：

vi a1.py

#!/usr/bin/python

import os

import datetime

dir="/root/python"

import datetime

now = datetime.datetime.now()

deltaH = datetime.timedelta(seconds=86400)

for root,dirs,files in os.walk(dir):

for f in files:if f == "aa.txt":j = datetime.datetime.fromtimestamp(os.path.getmtime(os.path.join(root,f))if j > (now - deltaH):print os.path.dirname(os.path.join(root,f)) :wq

python a1.py