cron | 易学教程

The script runs from command line but crontab fails

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问题 I'm still learning Bash and I'm having a problem with my script. I want to filter some calls with this script that is analyzing a call log, every 2 minutes as cronjob. The problem is that I can run it manually but it fails when run automatically from cron. I don't know why. It shouts something about permissions, so I kinda patched the script, so if it seems dirty I'm sorry. #!/bin/bash YESTERDAY=$((`date +'%s'`-86400)) AYER=`date -d "1970-01-01 $YESTERDAY sec" +"%Y%m%d"` FECHA=`date +"%Y%m%d"

How to schedule an R Script Cronjob in a linux server? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I am trying to schedule a cronjob to execute an R Script in a linux server. I have achieved to type the commands in the server manually and it works. To do so i have to type the following commands: root@debian:~# cd /home/script2 root@debian:/home/script2# Rscript scriptSecos.R How can i specify a cronjob that

How to schedule an R Script Cronjob in a linux server? [closed]

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Python任务调度模块APScheduler

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目录一、APScheduler 是什么&APScheduler四种组成部分？ 1、调度器(scheduler) 2、作业存储(job store) 3、执行器(executor) 4、触发器(triggers) 4.1、date 定时调度（作业只会执行一次） 4.2、interval: 每隔一段时间执行一次 4.3、cron: 使用同linux下crontab的方式二、 How：APSched 怎么用？安装快速上手任务操作 1、添加任务 2、删除任务 3、暂停&继续任务 4、修改任务属性 5、获得job列表 6、开始&关闭任务三、一些定时任务脚本 1、定时任务运行脚本每日凌晨00:30:30执行 2、每天晚上0点 - 早上8点期间，每5秒执行一次任务。 3、在0、10、20、30、40、50分时执行任务。 4、直到2020-05-30，每周从周一到周五的早上5:30都执行一次定时任务 5、在6,7,8,11,12月的第3个周五的1,2,3点执行定时任务 6、每5秒执行该程序一次参考资料一、APScheduler 是什么&APScheduler四种组成部分？ APScheduler全程为Advanced Python Scheduler，是一款轻量级的Python任务调度框架。它允许你像Cron那样安排定期执行的任务，并且支持Python函数或任意可调用的对象。 1

THINKPHP的cron计划任务的实现

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> THINKPHP的cron计划任务的实现,利用THINKPHP自带的cli,加上数据库执行记录（记录任务的报错,成功）。在服务器cron定时任务在网站目录(不是网站根目录)执行php cron.php，网站根目录为Public。写一个cli的入口文件 cli.php <?php define('MODE_NAME', 'cli'); // 检测PHP环境 if(version_compare(PHP_VERSION,'5.3.0','<')) die('require PHP > 5.3.0 !'); define('APP_DEBUG', true); // 定义应用目录 define('APP_PATH', __DIR__ . '/Application/'); // 引入ThinkPHP入口文件 require __DIR__ . '/ThinkPHP/ThinkPHP.php'; 写一个执行文件 cron.php define('AUTO_CRON', true); include __DIR__ . '/cli.php'; 数据库设计 DROP TABLE IF EXISTS `cron`; CREATE TABLE IF NOT EXISTS `cron` ( `cron_id` int

CRON的日常记录

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 0 */10 0-14 ? * 1-5 周一到周五0-14点每十分钟运行来源： oschina 链接： https://my.oschina.net/u/3957231/blog/3155808

Running script in crontab--reboot: command not found

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问题 I've set a script in my root crontab that is supposed to restart my machine with the reboot command. However, I am getting a reboot: command not found despite the fact that reboot is in the root user's path. $ sudo su $ which reboot /sbin/reboot $ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/go/bin My script: #!/bin/bash ping 8.8.8.8 -c 1 > /dev/null 2>&1; exit_code=$? time_stamp=$(date +"%Y%m%d-%H%M") if [ $exit_code -ne 0 ]; then (1>&2 echo "$time_stamp

How to run cron job with Firebase?

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问题 I am trying to run a cron job with Firebase. Basically I need to run a function that makes a ton of API calls and pushes data to firebase at 12:00am PST every day. Is there a way for me to do this on the server side with Firebase? I see that there's this module here, but I don't understand how it works at all. If anyone has any ideas or know how the aforementioned module could work that would be fantastic. EDIT: Idea. What if I were to create a data entry that showed the time that the

Run cron job only if it isn't already running

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问题 So I'm trying to set up a cron job as a sort of watchdog for a daemon that I've created. If the daemon errors out and fails, I want the cron job to periodically restart it... I'm not sure how possible this is, but I read through a couple of cron tutorials and couldn't find anything that would do what I'm looking for... My daemon gets started from a shell script, so I'm really just looking for a way to run a cron job ONLY if the previous run of that job isn't still running. I found this post,

Cronjob or MySQL event?

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问题 I have to update my MySQL database every hour, and I was wondering what the advantages/disadvantages of using a cronjob VS a MySQL event? For example, which is faster? Which is safer? Thanks! 回答1: I would always go a cron job, because: That's where sysadmins will expect it to be (this point is not to be underestimated) crobtab is bullet-proof, time-tested, extremely widely used and understood You can freely direct/analyse error/success messages where you want Some database tasks require