crontab

Running a cronjob only one using python-crontab

由 旧时模样 提交于 2019-12-25 16:07:10
问题 from crontab import CronTab tab = CronTab() cmd1 = 'actual command' cron_job = tab.new(cmd) cron_job.minute.every(1) cron_job.enable() tab.write_to_user(user=True) I have tried using minute.at(1) to run at the first minute, but I don't know whats the right way to run the command at a fixed time (6 am), just once.. I know "every" ends up repeating it, but I don't want that. The caveat is I need to use python-crontab. 回答1: The crontab syntax is: mm hh dd mt wd . So to set it to every morning at

Linux下的crontab定时执行任务命令详解

由 故事扮演 提交于 2019-12-25 12:34:55
在LINUX中，周期执行的任务一般由cron这个守护进程来处理[ps -ef|grep cron]。cron读取一个或多个配置文件，这些配置文件中包含了命令行及其调用时间。 cron的配置文件称为“crontab”，是“cron table”的简写。 一、cron服务 　　cron是一个linux下 的定时执行工具，可以在无需人工干预的情况下运行作业。 　　service crond start //启动服务 　　service crond stop //关闭服务 　　service crond restart //重启服务 　　service crond reload //重新载入配置 　　service crond status //查看服务状态 二、cron在3个地方查找配置文件： 1、/var/spool/cron/ 这个目录下存放的是每个用户包括root的crontab任务，每个任务以创建者的名字命名，比如tom建的crontab任务对应的文件就是/var/spool/cron/tom。一般一个用户最多只有一个crontab文件。 三、/etc/crontab 这个文件负责安排由系统管理员制定的维护系统以及其他任务的crontab。 SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/

Python cronjob won't run

由 烈酒焚心 提交于 2019-12-25 05:55:27
问题 When I am SSH'd into my Ubuntu 6.4 VM and run python nomi.py , my script executes as it should. I set up my crontab file as follows in order to run the script every 15 mins: # m h dom mon dow command */15 * * * * /usr/bin/python home/cron1admin/nomi.py Is there anything wrong with how I set up the crontab file? Do I need to do anything after the crontab file is created? The nomi.py file sends data to Google Analytics, and when I run the script, the data goes through. When I attempt to let the

crontab doesnt work for run java class

由 廉价感情. 提交于 2019-12-25 05:15:10
问题 testjob.sh #!/bin/bash export JAVA_HOME=/usr/java/jdk1.6.0_07 echo "Java Home is $JAVA_HOME" export CLASSPATH=.:..:$CLASSPATH: echo "Path is is $PATH" echo "CLASSPATH is is $CLASSPATH" $JAVA_HOME/bin/java TestJob echo "$JAVA_HOME/bin/java TestJob" crontab -e * * * * * /usr/testjob.sh >> /usr/result.txt 2>&1 if i run shell script manually it runs fine but when it will run through crontab job, error will occur as class not found.. please suggest.. 回答1: Have a look at this. Should answer your

Perl Cron Scheduler: start at x time, execute every y minutes forever

由 房东的猫 提交于 2019-12-25 04:53:35
问题 I'm using perl cron, and I want to make a rule like this run every xx min/hours starting at yy:yy time (until the end of time) How would I put this into a cron string? perl:cron seems to use the same syntax as regular cron so a regular cron string should work TIA! 回答1: The short answer is that you will either need to write this yourself or find a different third-party package, due to your requirements. There's two things you're asking for that cron doesn't do: Run every X minutes. Say you

Bash script: perform actions based on file contents

由 谁说胖子不能爱 提交于 2019-12-25 04:39:07
问题 I have a bash script that loops through all folders inside a given path and performs some actions. I now need this script to find the given path by itself, by monitoring a file that I will update from my server. So, the script has to: check if file todo.txt exists read the first line of the file perform actions inside the folder defined in that first line delete todo.txt append done.txt with the same line it found in todo.txt For some reason, when I run the script directly, this works perfect

How can I make a cron to execute a php script?

由 让人想犯罪 __ 提交于 2019-12-25 03:51:58
问题 I want execute a php script each five minutes at my server, it is a php script which works fine alone, I tried since my browser and since console using "php -f php_file.php". But I need execute it automatically every days. I was searching on Google and here to make it but any solution worked for me: First I edit my crontab and I also restart the cron to make sure that it was updated correctly. */5 * * * * /usr/bin/php /var/www/myscript.php and I tried the following too: */5 * * * * /usr/bin

How can I make a cron to execute a php script?

由 ⅰ亾dé卋堺 提交于 2019-12-25 03:51:34
问题 I want execute a php script each five minutes at my server, it is a php script which works fine alone, I tried since my browser and since console using "php -f php_file.php". But I need execute it automatically every days. I was searching on Google and here to make it but any solution worked for me: First I edit my crontab and I also restart the cron to make sure that it was updated correctly. */5 * * * * /usr/bin/php /var/www/myscript.php and I tried the following too: */5 * * * * /usr/bin

Swoft源码之Swoole和Swoft的分析

由 大兔子大兔子 提交于 2019-12-25 03:40:51
这篇文章给大家分享的内容是关于Swoft 源码剖析之Swoole和Swoft的一些介绍(Task投递/定时任务篇），有一定的参考价值，有需要的朋友可以参考一下。 前言 Swoft 的任务功能基于 Swoole 的 Task机制 ，或者说 Swoft 的 Task 机制本质就是对 Swoole 的 Task机制 的封装和加强。 我的官方群 点击此处 。 任务投递 //Swoft\Task\Task.php class Task { /** * Deliver coroutine or async task * * @param string $taskName * @param string $methodName * @param array $params * @param string $type * @param int $timeout * * @return bool|array * @throws TaskException */ public static function deliver(string $taskName, string $methodName, array $params = [], string $type = self::TYPE_CO, $timeout = 3) { $data = TaskHelper::pack($taskName,

Cron task python script not working

由 瘦欲@ 提交于 2019-12-25 02:57:34
问题 I have a python script I want to fire off every night at midnight. I'm using cron scheduler right now to do so, however, I can't figure out why it's not working. For now, I've been using close times (within the next minute or so) to test the cronjob, but I will ultimately want it to work for midnight. Here is what I put in my crontab file (to run for 2:43pm), hosted on my ubuntu machine: 43 14 * * * root /home/grantmcgovern/Developer/Projects/StudyBug/Main.py I even put the: #!user/bin/python
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