cron | 易学教程

Handling cron jobs on staging environment on google app engine

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问题 I want to set up a staging environment on Google App Engine and have found good guidance for this in the following question: How to set up a staging environment on Google App Engine The only unanswered question I have is how to handle Cron jobs in this case. Ideally I'll just have to change the version to deploy to production, however I fear that that would mean that all cron jobs also run on the staging version, or is this not the case? 回答1: If you're using a different version approach you

Spring Cron scheduler “disable pattern”

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问题 My application loads some cron patterns from a properties file. Im using the @Scheduled annotation like this: @Scheduled(cron = "${config.cronExpression:0 0 11,23 * * *}") Now I want to disable some tasks and the easiest solution would be to enter a cron pattern wich will never run. In order to do this, I thought about using a cron expression that only executes at a specific day in the past. But unfortunately the Spring cron expressions don't allow to add a year or a date in the past. Is

RVM isnt setting environment with cron

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问题 I'm having a rough time executing script/runner with a cron and RVM. I believe the issues lie with the rvm environment not being set before the runner is executed. currently im throwing the error /bin/sh: 1.sql: command not found which is more than i've gotten earlier, so i guess that's good. I've read this thread Need to set up rvm environment prior to every cron job but im still not really getting it. Part of the problem i think is the error reporting. this is my runner thus far. */1 * * *

Have cron wait for job to finish before re-launching

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问题 I have a cronjob that executes every second minute that usually runs in seconds, but sometimes for several minutes. I need cron to not execute the command if it's already running when the next minute comes. The line looks like this */1 * * * * cmd I have tried with this * * * * * ID=job1 FREQ=1m AFTER=job1 cmd but to no success. Is it possible to solve with cron or do I have to implement locking? 回答1: You can make a temp file called inProgress (or whatever) and store it in a standard place,

定时器注解

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//1.在启动main方法上添加@EnableScheduling注解，表示开启定时任务 @SpringBootApplication@EnableSchedulingpublic class LjSysManageApplication { public static void main(String[] args) { SpringApplication.run(LjSysManageApplication.class, args); }}//2.编写定时任务 @Componentpublic class SchedulerTask { @Autowired SchedulerTaskService schedulerService; /** * 表示每天0点执行一次 */ @Scheduled(cron = "0 0 0 * * ?") /** * 表示每5秒执行一次 * */ //@Scheduled(cron = "*/5 * * * * ?") private ResponseHelper getYear(){ return schedulerService.GetYear(); }} 来源： https://www.cnblogs.com/qkkdemo/p/12214965.html

【原】shell增加定时任务

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通过shell脚本增加定时任务：#CRON_FILE="/var/spool/cron/root" （centos系统） CRON_FILE="/var/spool/cron/crontabs/root"（ubantu系统） grep "cron_one_min.sh" ${CRON_FILE}|| echo "01 * * * * bash /data/server/cron/one_min.sh" >> ${CRON_FILE} 来源： https://www.cnblogs.com/HYanqing/p/12213185.html

CRON jobs in php deployed in windows platform

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问题 How to run a scheduled job scripted in php using windows? I'm using Windows XP sp3. 回答1: Use at or the task scheduler. How To Use the AT Command to Schedule Tasks (seems to require login now - wtf?) Alternative: Wikipedia on AT How To Schedule Tasks in Windows XP You would have to call the PHP interpreter from the command line. In Windows, it is called php.exe . You'll have to find out where it resides, usually in the Programs folder or a sub-directory of your server installation. The command

Extra email from Cron Daemon when running an email list script

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问题 I have a PHP script that sends out a bi-weekly reminder to subscribers. Each time it sends out the email it also sends out an email that comes in from "Cron Daemon." When I first wrote the script, it didn't send this email, but now it does. I have a few questions about this. This is what the email says: Set-Cookie: PHPSESSID=((random letters and numbers here)); path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma:

Rake Task with Cron Job

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问题 I am trying to set up cron job to run a rake task daily. I currently have the following cron job (note, the time is all *'s because I want it to run every minute while testing) * * * * * cd /home/jon/thestockenator/lib/tasks/ && ./get_current_data.sh In the shell script I added the entire PATH to whatever the path is when cron runs it and call rake test_task. I set up a basic rake task that simply outputs some text (because my real one takes a while to run) task :test_task do puts "this is a

Set Up Cron Job To Execute PHP

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问题 I have a php page with a text box that accepts a player's id number, makes a request to another page based off that id, using a GET request, and then uses the response. This part works perfectly. However now I would like to automate the process using a Cron job. I have never used a Cron job before so I am a bit confused on their execution. Following this documentation though: [http://www.cyberciti.biz/faq/how-do-i-add-jobs-to-cron-under-linux-or-unix-oses/][1 I am attempting to set one up.