使用python备份指定目录并删除备份超过一定时长的文件

 #!/usr/bin/env python

 #-*- coding: utf-8 -*-

 """

 @Project:Py

 @author:

 @Email:

 @Software: PyCharm

 @file: test_rm.py

 @time: 2018/1/17 0017 下午 14:14

 """

 import os

 import time

 # 备份的指定目录

 source = ['/usr/local/src/test1/']

 # 备份文件存放路径

 target_dir='/home/backup/'

 # 备份时长

 data = 3

 # 备份日志

 filebak_log = "/var/log/filebak.log"

 # 删除备份文件日志

 filerm_log = "/var/log/filerm.log"

 def file_bak():

     """备份指定目录下的文件"""

     target=target_dir+time.strftime('%Y%m%d%H%M%S')+'.tar.gz'

     cmd='tar -zcPf %s %s '%(target,' '.join(source))

     if os.system(cmd)==0 :

         with open(filebak_log,'a') as filebak:

             filebak.write('successfull backup to %s \n' % target)

 # crontab

 # 0 4 * * * /usr/bin/python /root/demooil_bak.py >> /var/log/demooil_bak.py.log 2>&1

 def file_rm():

     """删除备份目录下超过一定时长的文件"""

     f = list(os.listdir(target_dir))

     now_time = time.strftime('%Y%m%d%H%M%S')[0:8]

     for i in f:

         if i[15:] == 'tar.gz':

             exit_time = i[0:8]

             update_time = int(exit_time) + data

             if update_time < int(now_time):

                 os.remove(target_dir+i)

                 with open(filerm_log,'a') as file_log:

                     file_log.write("%s删除备份文件%s \n" % (now_time,i))

 if __name__ == '__main__':

     file_bak()

     file_rm()

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