#! /usr/bin/env python
# -*- coding=utf-8 -*-
import sys
import os
import time,datetime

# 定義需要刪除文件的目錄
dir = '/data/webbak/'
# 被刪除文件寫入日志文件
logdir = '/var/log'
logfile = os.path.join(logdir, 'delete.log')

# 獲取當前系統python版本
ver = sys.version
ver = ver.split(' ')
ver = ver[0]

# 將"Wed Jul  4 13:25:59 2012"格式的時間轉成“2012-07-02 14:50:15”格式的時間
# version是當前系統python版本號
# time是"Wed Jul  4 13:25:59 2012"格式的時間
# 函數返回"2012-07-02 14:50:15"格式的時間
def string2time(str_time, version = ver):
 version_l = version.split('.')[0:2]
 ver = version_l[0] + '.' + version_l[1] 
 if (ver == '2.7'):
  f_time = datetime.datetime.strptime(str_time, time_format)
  f_time = f_time.strftime('%Y-%m-%d %H:%M:%S')
  return f_time
 elif(ver == '2.4'):
  f_time = time.strptime(str_time, time_format)
  f_time = datetime.datetime(*f_time[0:6])
  return f_time

# 時間格式
time_format = "%a %b %d %H:%M:%S %Y"
# 取得當前時間
today = datetime.datetime.now()
# 定義4個星期
four_weeks = datetime.timedelta(weeks=6)
# 4星期前的日期
four_weeks_ago = today - four_weeks
# 將時間轉成timestamps
four_weeks_ago_timestamps = time.mktime(four_weeks_ago.timetuple())
# 列出目錄中的所有文件
files = os.listdir(dir)
# 打開要刪除的文件日志
fh = open(logfile, "w+")
# 遍歷文件，打印出文件的創建時間
for f in files:
 # 忽略掉.開頭的文件
 if f.startswith('.'):
  continue
 # 忽略掉當前目錄下的目錄
 if os.path.isdir(os.path.join(dir,f)):
  continue
 # 獲得文件的modify時間，并轉換成timestamp格式
 file_timestamp = os.path.getmtime(os.path.join(dir, f))
 file_time_f = string2time(time.ctime(file_timestamp))
 if float(file_timestamp) <= float(four_weeks_ago_timestamps):
  fh.write(str(today) + "/t" + str(file_time_f) + "/t" + os.path.join(dir,f) + "/n")
  os.remove(os.path.join(dir,f))
# 關閉文件
fh.close()

find  /data/log -ctime +5 | xargs  rm  -f

import os
import sys
import time
class DeleteLog:

    def __init__(self,fileName,days):
        self.fileName = fileName
        self.days = days
    def delete(self):
        if os.path.isfile(self.fileName):
            fd = open(self.fileName,'r')
            while 1:
                buffer = fd.readline()
                if not buffer : break
                if os.path.isfile(buffer):
                    os.remove(buffer)
            fd.close()
        elif os.path.isdir(self.fileName):
            for i in [os.sep.join([self.fileName,v]) for v in os.listdir(self.fileName)]:
                print i
                if os.path.isfile(i):
                    if self.compare_file_time(i):
                        os.remove(i)
                elif os.path.isdir(i):
                    self.fileName = i
                    self.delete()
    def compare_file_time(self,file):
        time_of_last_access = os.path.getatime(file)
        age_in_days = (time.time()-time_of_last_access)/(60*60*24)
        if age_in_days > self.days:
            return True
        return False
if __name__ == '__main__':
    if len(sys.argv) == 2:
        obj = DeleteLog(sys.argv[1],0)
        obj.delete()
    elif len(sys.argv) == 3:
        obj = DeleteLog(sys.argv[1],int(sys.argv[2]))
        obj.delete()
    else:
        print "usage: python %s listFileName|dirName [days]" % sys.argv[0]
        sys.exit(1)