#!/usr/bin/python # encoding=utf-8 # Filename: monitorLog.py import os import signal import subprocess import time logFile1 = "test1.log" logFile2 = 'test2.log' #日志文件一般是按天产生，则通过在程序中判断文件的产生日期与当前时间，更换监控的日志文件 #程序只是简单的示例一下，监控test1.log 10秒，转向监控test2.log def monitorLog(logFile):     print '监控的日志文件 是%s' % logFile     # 程序运行10秒，监控另一个日志     stoptime = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time() + 10))     popen = subprocess.Popen('tail -f ' + logFile, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)     pid = popen.pid     print('Popen.pid:' + str(pid))     while True:         line = popen.stdout.readline().strip()         # 判断内容是否为空         if line:             print(line)         # 当前时间         thistime = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))         if thistime >= stoptime:             # 终止子进程             popen.kill()             print '杀死subprocess'             break     time.sleep(2)     monitorLog(logFile2) if __name__ == '__main__':     monitorLog(logFile1)