cron

问题 i have start.sh bash script that is running though CRON JOB on ubuntu server start.sh contains bellow mentioned lines of code path of start.sh is /home/ubuntu/folder1/folder2/start.sh #!/bin/bash crawlers(){ nohup scrapy crawl first & nohup scrapy crawl 2nd & wait $! nohup scrapy crawl 3rd & nohup scrapy crawl 4th & wait } cd /home/ubuntu/folder1/folder2/ PATH=$PATH:/usr/local/bin export PATH python init.py & wait $! crawlers python final.py my issue is if i run start.sh my myself on command

问题 How can I write a cron job start from scratch to run a java class or write a cron job class with embedded Java code to run? and how can I set the timer to run every one minute (for example) that cron job? Note: totally beginner with Linux 回答1: Here is a sample sh file running a test job #!/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 "

问题 After migrating to Firebase, i tested sending notification by using the firebase console it works fine, but i need a daily notification on a specific time so instead of using the firebase console i use my former cron job to send notification daily. I changed https://android.googleapis.com/gcm/send to https://fcm.googleapis.com/fcm/send but my device doesn't receive any notification. Is there any way to solve this? Or did I miss anything? my cron job is working fine for my devices that is

问题 After migrating to Firebase, i tested sending notification by using the firebase console it works fine, but i need a daily notification on a specific time so instead of using the firebase console i use my former cron job to send notification daily. I changed https://android.googleapis.com/gcm/send to https://fcm.googleapis.com/fcm/send but my device doesn't receive any notification. Is there any way to solve this? Or did I miss anything? my cron job is working fine for my devices that is

问题 After migrating to Firebase, i tested sending notification by using the firebase console it works fine, but i need a daily notification on a specific time so instead of using the firebase console i use my former cron job to send notification daily. I changed https://android.googleapis.com/gcm/send to https://fcm.googleapis.com/fcm/send but my device doesn't receive any notification. Is there any way to solve this? Or did I miss anything? my cron job is working fine for my devices that is

问题 Scenario As a fairly new user of Laravel and Elastic Beanstalk I soon found my self in the need to schedule operations, like most of us do. In the past I had always used simple crontab scheduling for this. So now I stood before a list of questions: How do I run Laravel code using crontab? How do I setup crontab in my Elastic Beanstalk environment? Finding the individual answers to these questions weren't that hard. Combining them and actually getting it all to work however turned out to be a

问题 Scenario As a fairly new user of Laravel and Elastic Beanstalk I soon found my self in the need to schedule operations, like most of us do. In the past I had always used simple crontab scheduling for this. So now I stood before a list of questions: How do I run Laravel code using crontab? How do I setup crontab in my Elastic Beanstalk environment? Finding the individual answers to these questions weren't that hard. Combining them and actually getting it all to work however turned out to be a

问题 there are many post on stackoverflow with this topic but (i dont know why) nothing will work for me. What i have function isa_add_every_three_minutes( $schedules ) { $schedules['every_three_minutes'] = array( 'interval' => 180, 'display' => __( 'Every 3 Minutes', 'textdomain' ) ); return $schedules; } add_filter( 'cron_schedules', 'isa_add_every_three_minutes' ); function every_three_minutes_event_func() { // do something } wp_schedule_event( time(), 'every_three_minutes', 'every_three

问题 there are many post on stackoverflow with this topic but (i dont know why) nothing will work for me. What i have function isa_add_every_three_minutes( $schedules ) { $schedules['every_three_minutes'] = array( 'interval' => 180, 'display' => __( 'Every 3 Minutes', 'textdomain' ) ); return $schedules; } add_filter( 'cron_schedules', 'isa_add_every_three_minutes' ); function every_three_minutes_event_func() { // do something } wp_schedule_event( time(), 'every_three_minutes', 'every_three

问题 I want to run a PHP script every 5 seconds without using cronjobs. How is it possible in PHP? I want to update user data every 5 seconds. The program will execute when I refresh the page but I want to run that script if the page is open or not in browser. How can I achieve this ? 回答1: One way to do it would be to have a text file or a database entry that holds the time of the last run in UNIX time. Then on all (or selected) pages you add something like; If($lastrun +5 < strtotime(now)){ //Run