转自：https://www.cnblogs.com/perfei/p/6138214.html
该python 脚本有以下三个功能：
1. 实现查看目录下重复的文件，输出文件按修改时间升序排列
2. 将按修改时间排列比较旧的、可删除的文件列出来
3. 按目录对重复文件进行统计，比如，目录/tmp 重复个数5，是指/tmp目录下有5个文件在其他地方也存在
python脚本
#!/usr/bin/env python
#coding=utf-8
'''
Created on Nov 30, 2016
@author: fangcheng
'''
from __future__ import print_function
from operator import itemgetter
import os
import time
'tt为浮点型日期，换化为年月日时分秒格式时间'
def timeYS(tt):
t1 = time.localtime(tt)
t2 = time.strftime("%Y-%m-%d %H:%M:%S",t1)
return t2;
class File():
'''
copy move remove
'''
allfilecount = 0
rddfilecount = 0
singlefiles={}
rddfiles={}
rdddirs={}
def __init__(self):
'''
Constructor
'''
def getFileMsg(self,filepath):
'''
以元组(filepath,ftime,size)形式输出文件信息
'''
if os.path.isfile(filepath):
size = os.path.getsize(filepath) #bytes B
if size <= 1024:
size ='{0}B'.format(size);
elif size <= 1024*1024:
size = size/1024
size ='{0}K'.format(size);
else:
size = size/1024/1024
size ='{0}M'.format(size);
#filename = os.path.basename(filepath)
ftime = timeYS(os.path.getmtime(filepath))
return (filepath,ftime,size)
return ()
def setRedundanceFile(self,filepath):
'''
根据文件名称和大小判断文件是否重复,文件信息:元组(filepath,mtime,size) ,getFileMsg返回值
1. 遍历某一目录下所有文件
2. 将文件的名称及大小组成一个字符串，做为 key 放入字典 dict1 ,其 value 为 文件信息
3. 每次放入时时判断 key 是否存在，若存在，就将 文件信息 放入字典 dict2
4. dict2 的 key 为 文件名称，value为 文件信息 列表 list1
'''
try:
if os.path.isdir(filepath):
for fil in os.listdir(filepath):
fil = os.path.join(filepath,fil)
self.setRedundanceFile(fil)
elif os.path.isfile(filepath):
self.allfilecount = self.allfilecount + 1
size = os.path.getsize(filepath)
filename = os.path.basename(filepath)
f = self.getFileMsg(filepath)
filekey = '{0}_{1}'.format(filename, size)
if self.singlefiles.has_key(filekey):
self.rddfilecount = self.rddfilecount + 1
#增加规则：发现一个重复文件时，在父目录下文件数加1，若是首次发现则取该文件在总文件列表的父目录，其数目也加1
pardir = os.path.dirname(filepath)
if self.rdddirs.has_key(pardir):
self.rdddirs[pardir] = self.rdddirs.get(pardir)+1
else:
self.rdddirs[pardir] = 1
if self.rddfiles.has_key(filekey) :
self.rddfiles[filekey].append(f)
else:
self.rddfiles[filekey] = [f]
f = self.singlefiles.get(filekey)
self.rddfiles[filekey].append(f)
#若是首次发现则取该文件在总文件列表的父目录，其数目也加1
pardir = os.path.dirname(f[0])
if self.rdddirs.has_key(pardir):
self.rdddirs[pardir] = self.rdddirs.get(pardir)+1
else:
self.rdddirs[pardir] = 1
else:
self.singlefiles[filekey]=f
else:
return
except Exception as e:
print(e)
def showFileCount(self):
print(self.allfilecount)
def showRedundanceFile(self,filepath):
'''
根据文件名称和大小判断文件是否重复
'''
self.allfilecount = 0
self.rddfilecount = 0
self.singlefiles={}
self.rddfiles={}
self.setRedundanceFile(filepath)
print('the total file num:{0},the redundance file num(not including the first file):{1}'.format(self.allfilecount,self.rddfilecount))
print('-----------------------------------------')
for k in self.rddfiles.keys():
for l in sorted(self.rddfiles.get(k), key=itemgetter(1)): #按修改日期升序排列
print(l);
print('');
print('------------------------------------------')
def showCanRemoveFile(self,filepath):
'''
根据文件名称和大小判断文件是否重复
输出按修改时间较旧的文件
'''
self.allfilecount = 0
self.rddfilecount = 0
self.singlefiles={}
self.rddfiles={}
rmlist = []
self.setRedundanceFile(filepath)
for k in self.rddfiles.keys():
tmplist = sorted(self.rddfiles.get(k), key=itemgetter(1))
tmplist.pop()
rmlist.extend(tmplist)
for rl in rmlist:
print(rl[0])
def rdddirstat(self):
'''
按目录统计文件重复个数
输出：目录/tmp 重复个数5，是指/tmp目录下有5个文件在其他地方也存在
'''
if len(self.rdddirs)> 0 :
print('The redundance file statistics by dirs:')
for rd in self.rdddirs.keys():
print('{0} {1}'.format(rd, self.rdddirs.get(rd)))
else:
print('There are no redundance files')
if __name__ == '__main__':
f = File()
filepath = os.getcwd()
#filepath = '/scripts'
f.showRedundanceFile(filepath) #查看多余的文件
#f.showCanRemoveFile(filepath) #按修改时间给出比较旧的多余文件
f.rdddirstat() #按目录统计重复文件个数
脚本添加执行权限后，可直接在服务器上执行
chmod +x findrdd.py
linux上执行示例
[root@bak scripts]# ./findrdd.py
the total file num:33,the redundance file num(not including the first file):5
-----------------------------------------
('/scripts/bkapp.sh', '2016-03-09 16:31:03', '3K')
('/scripts/esgcc/bkapp.sh', '2016-03-10 11:06:06', '3K')
('/scripts/show_rollbak.txt', '2016-03-09 10:50:02', '2K')
('/scripts/esgcc/show_rollbak.txt', '2016-03-10 11:06:06', '2K')
('/scripts/esgcc/deploy.sh', '2016-03-10 11:36:19', '8K')
('/scripts/deploy.sh', '2016-03-11 11:42:04', '8K')
('/scripts/rollback.sh', '2016-03-10 10:22:33', '10K')
('/scripts/esgcc/rollback.sh', '2016-03-10 11:06:06', '10K')
('/scripts/show_deploy.txt', '2016-03-09 10:50:02', '2K')
('/scripts/esgcc/show_deploy.txt', '2016-03-10 11:06:06', '2K')
------------------------------------------
The redundance file statistics by dirs:
/scripts 5
/scripts/esgcc 5
windows上执行示例（需要安装python）:
C:UsersfeiDesktop mp>python findrdd.py
the total file num:42,the redundance file num(not including the first file):10
-----------------------------------------
('C:\Users\fei\Desktop\tmp\build\build\src\application\application.css', '2016-11-22 13:11:51', '101B')
('C:\Users\fei\Desktop\tmp\build\project\src\application\application.css', '2016-11-22 13:11:51', '101B')
('C:\Users\fei\Desktop\tmp\build\build\classes\application\application.css', '2016-11-22 13:11:53', '101B')
('C:\Users\fei\Desktop\tmp\build\project\src\login\Login.java', '2016-11-22 13:11:51', '3K')
('C:\Users\fei\Desktop\tmp\build\build\src\login\Login.java', '2016-11-22 13:11:52', '3K')
('C:\Users\fei\Desktop\tmp\build\dist\LoginCSS.jar', '2016-11-22 13:11:53', '55K')
('C:\Users\fei\Desktop\tmp\build\deploy\LoginCSS.jar', '2016-11-22 13:11:54', '55K')
('C:\Users\fei\Desktop\tmp\build\project\src\login\background.jpg', '2016-11-22 13:11:51', '51K')
('C:\Users\fei\Desktop\tmp\build\build\src\login\background.jpg', '2016-11-22 13:11:52', '51K')
('C:\Users\fei\Desktop\tmp\build\build\classes\login\background.jpg', '2016-11-22 13:11:53', '51K')
('C:\Users\fei\Desktop\tmp\build\project\src\application\Main.java', '2016-11-22 13:11:50', '633B')
('C:\Users\fei\Desktop\tmp\build\build\src\application\Main.java', '2016-11-22 13:11:51', '633B')
('C:\Users\fei\Desktop\tmp\build\project\src\login\Test.java', '2016-11-22 13:11:51', '443B')
('C:\Users\fei\Desktop\tmp\build\build\src\login\Test.java', '2016-11-22 13:11:52', '443B')
('C:\Users\fei\Desktop\tmp\build\project\src\login\Login.css', '2016-11-22 13:11:51', '2K')
('C:\Users\fei\Desktop\tmp\build\build\src\login\Login.css', '2016-11-22 13:11:52', '2K')
('C:\Users\fei\Desktop\tmp\build\build\classes\login\Login.css', '2016-11-22 13:11:53', '2K')
------------------------------------------
The redundance file statistics by dirs:
C:UsersfeiDesktop mpuilduildsrcapplication 2
C:UsersfeiDesktop mpuilddeploy 1
C:UsersfeiDesktop mpuilduildclassesapplication 1
C:UsersfeiDesktop mpuildprojectsrclogin 4
C:UsersfeiDesktop mpuilddist 1
C:UsersfeiDesktop mpuilduildclasseslogin 2
C:UsersfeiDesktop mpuildprojectsrcapplication 2
输出结果中第二个方法-输出可删除文件列表注释掉了，该删除方式仅供参考，是否按这种“最新修改的文件就是有效文件、其他文件皆可不要”方式筛选尚需自我决定。