python指令碼執行shell，通過crontab執行python指令碼
| 代碼如下 |
複製代碼 |
#!/usr/bin/env python
#-*-coding:utf-8-*- import os
import time
import datetime
import subprocess today =datetime.date.today()
deltadays = datetime.timedelta(days=1) #確定日期差額，如前天 days=2
yesterday = today - deltadays month = yesterday.strftime('%b')
date = yesterday.strftime('%d') command1 = "ls -hl /log1 | grep '%s %s' | awk '{print i$9}' i='/log1/' | xargs rm " % (month, date)
command11 = "ls -hl /log1 | grep '%s %s' | awk '{print i$9}' i='/log1/' | xargs rm " % (month, date)
command2 = "ls -hl /log2 | grep '%s %s' | awk '{print i$9}' i='/log2/' | xargs rm " % (month, date)
command22 = "ls -hl /log2 | grep '%s %s' | awk '{print i$9}' i='/log2/' | xargs rm " % (month, date) os.system(command1)
os.system(command11)
os.system(command2)
os.system(command22) |
注意
| 代碼如下 |
複製代碼 |
ls -hl /log2 | grep '%s %s' | awk '{print i$9}' i='/log2/' | xargs rm
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這段shell命令最好是通過python執行shell答應看下具體的檔案列出來的格式，防止無效
| 代碼如下 |
複製代碼 |
print os.system("ls -hl /log2")
|
這樣運行後就能得出結果。然後根據具體情況修改就好了。
例子2,刪除日期的前一天 .
| 代碼如下 |
複製代碼 |
import datetime
import time def get_yestoday(mytime):
myday = datetime.datetime( int(mytime[0:4]),int(mytime[4:6]),int(mytime[6:8]) )
#now = datetime.datetime.now()
delta = datetime.timedelta(days=-1)
my_yestoday = myday + delta
my_yes_time = my_yestoday.strftime('%Y%m%d')
return my_yes_time |
例子，刪除檔案夾內規定時間內的檔案
| 代碼如下 |
複製代碼 |
#-*-coding=gbk -*-
import os
import time def listDir(fileDir):
for eachFile in os.listdir(fileDir):
if os.path.isfile(fileDir+"/"+eachFile): #如果是檔案，判斷最後修改時間，符合條件進行刪除
ft = os.stat(fileDir+"/"+eachFile);
ltime = int(ft.st_mtime); #擷取檔案最後修改時間
#print "檔案"+path+"/"+eachFile+"的最後修改時間為"+str(ltime);
ntime = int(time.time())-3600*3; #擷取現在時間減去3h
if ltime<=ntime :
print "我要刪除檔案"+fileDir+"/"+eachFile;
os.remove(fileDir+"/"+eachFile); #刪除3小時前的檔案 elif os.path.isdir(fileDir+"/"+eachFile) : #如果是檔案夾，繼續遞迴
listDir(fileDir+"/"+eachFile);
if __name__ == '__main__':
path = "E:/offlinefiles"; #規定目錄
while True : #持續
time.sleep(600); #減少資源使用率 600s秒一次
print "3600s wake up";
listDir(path); |
或者
| 代碼如下 |
複製代碼 |
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) |
