2.11.2. Adding a cron task

To add a cron task, do the following:

1. Open the section "Task Schedule (Cron)»:
2. Click "Add task»:
3. Specify the required settings and click "Save»:
   • «Task"- specify the command to be executed according to the schedule. It is recommended to first run it manually, by connecting via SSHto make sure it works exactly as intended.
   • «Start time"- specify the time when the task should start. Use one of the ready-made presets or specify your version. Note In the selection and verification of your option will help "Help in setting up"Which opens our cron calculator, or use third-party services like Sysmasters.net | Cron calculator or crontab guru.
   • «Comment"- if necessary, enter an arbitrary comment to the task. Used for convenience. Comments can be useful when there are a lot of added tasks.
   • «Send report about by e-mail"- if you want to receive cron task execution reports to the mail, specify the mailbox to which you want to send them, if the reports are not needed - leave the field blank.
4. Wait approximately 30-60 minutes for the changes to take effect.

To specify when to start Cron tasks, a specific syntax is used for each value of the specified time. Syntax elements can be combined with each other by separating them with a comma, for example: */30, 1-10, 53 - the task will be launched at: 00, 01 and all numbers up to 10, 30, 53.

• */X - launching the task at a time multiple of the specified in X. For example, an indication */20 for seconds and minutes will run the task in the following values: 00, 20, 40.
• 1,2,3 - listing the required values separated by commas.
• 1-10 - an indication of the interval of the required values, in the example all numbers from 1 to 10 will be used.
• * - any value.

All added tasks are displayed in the list:

• «Start time"- the task launch schedule in the standard cron format.
• «Next launch"- date and time of the next scheduled task execution. Attention! The launch at the specified time may not take place if less than 30-60 minutes have passed since the task was added or changed.
• «Task"- the full text of the command, a comment to the task and the launch schedule in a human-readable form.
• «Report"- the mail address where the task progress reports, or a dash.
• «Control»- task control buttons:
  • «Suspend task execution" or "Restore task execution"- stop or resume the launch of a scheduled task.
  • «Test run of the task"- start the task manually. It can be used to check the work of a command or launch it ahead of schedule before the scheduled time. After launch, the window displays the contents of standard output - the text displayed by the command during its execution, or information about errors.
  • «Edit"- change task settings.
  • «Delete"- deleting the task.