cron-task
Difference between cron, crontab, and cronjob?
cron is the name of the tool, crontab is generally the file that lists the jobs that cron will be executing, and those jobs are, surprise surprise, cronjobs.
How to create cron statement to run for multiple hours
You cannot, you can use either multiple values OR a range 0 1,2,3,4,5,6,7,8,10,11,12,13,14,15 * * * Source: Time tags are separated by spaces. Do not use spaces within a tag, this will confuse cron. All five tags must be present. They are a logical AND of each other. There is another space between the last … Read more
Append current date to the filename via Cron?
* * * * * echo “hello” > /tmp/helloFile_$(date +\%Y\%m\%d\%H\%M\%S).txt You just need to escape the percent signs. Other date formats: http://www.cyberciti.biz/faq/linux-unix-formatting-dates-for-display/
Using CRON jobs to visit url?
* * * * * wget -O – http://yoursite.com/tasks.php >/dev/null 2>&1 That should work for you. Just have a wget script that loads the page. Using -O – means that the output of the web request will be sent to STDOUT (standard output) by adding >/dev/null we instruct standard output to be redirect to a … Read more
Scheduling Python Script to run every hour accurately
Maybe this can help: Advanced Python Scheduler Here’s a small piece of code from their documentation: from apscheduler.schedulers.blocking import BlockingScheduler def some_job(): print “Decorated job” scheduler = BlockingScheduler() scheduler.add_job(some_job, ‘interval’, hours=1) scheduler.start()
How to run a cronjob every X minutes?
In a crontab file, the fields are: minute of the hour. hour of the day. day of the month. month of the year. day of the week. So: 10 * * * * blah means execute blah at 10 minutes past every hour. If you want every five minutes, use either: */5 * * * … Read more
AWS Lambda Scheduled Tasks
Native Support for Scheduled Events added October 8, 2015: As announced in this AWS blog post, scheduling is now supported as an event source type (also called triggers) called “CloudWatch Events – Schedule“, and can be expressed as a rate or a cron expression. Add Scheduled Event to a new lambda Navigate to the ‘Configure … Read more
Restarting cron after changing crontab file? [closed]
No. From the cron man page: …cron will then examine the modification time on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab file is modified But if you just want to make sure its done anyway, sudo service cron reload or /etc/init.d/cron reload