linux：使用python脚本监控某个进程是否存在（不使用crontab）

背景：

　　需要每天定时去检测crontab进程是否启动，所以不能用crontab来启动检测脚本了，直接使用while 循环和sleep方式实现定时检测

# coding:utf-8
import os
import send_message
import datetime
import timecurr_time = datetime.datetime.now()
time_str = datetime.datetime.strftime(curr_time,'%H:%M:%S')def loopMonitor():curr_time = datetime.datetime.now()time_str = datetime.datetime.strftime(curr_time,'%H:%M')if time_str == '08:05':print 'come in already'check_process()return#2s检查一次time.sleep(60)loopMonitor()def check_process():process="./cron.lock"os.system("ps -ef|grep python3|grep -v grep >%s" % process)if not(os.path.getsize(process)):send_message.send_message('crontab not running', [8618320120156])else:f=open('./cron.lock', "r+")f.truncate()if __name__ == '__main__':loopMonitor()