Crontab Management

This page is used for creating and managing scheduled tasks executed by crontab. It contains the list of existing crontab tasks that belong to the specified system user.

The Show Crontab of: drop-down box indicates the system user, whose scheduled tasks are currently displayed. It also allows to select another system user to view and/or manage scheduled tasks that belong to that user.

Each line in the crontab task list represents a single task. The Status (S) column shows whether the selected task is enabled or disabled (the disabled tasks are not executed). The Command column contains the command that is executed within the selected task and serves as a link to the page that allows editing the selected scheduled task properties.

The task list can be sorted by its parameters in ascending or descending order. To sort the task list, click on the name of the sorting parameter. An arrow will show the order of sorting. The sorting criteria are:

  1. (S)tatus
  2. (M)inute
  3. (H)our
  4. (DM) Day of the Month
  5. (M)onth
  6. (DW) Day of the Week
  7. Command

You have an option of searching through the list for a certain pattern. It may help you in case you have a great number of items in the list and you need to work with a particular one. To search through the list, type the pattern string into the text input field and click Search. If there were any items found matching the entered pattern string, they will all be displayed in the form of a reduced list. The button Show All will revert to displaying the whole list.

To add a new task to the list, click the Add button. You will be taken to the crontab record editing page, where you are required to supply necessary parameters, such as the time of executing the task, the status (enabled/disabled), etc.

To delete one or more items from the list, check the corresponding checkboxes and click the Remove Selected button.

You can set crontab to send the messages to a specified e-mail address. To do so, enter the e-mail address into the Send crontab messages to address: text input field and click Set. All scheduled tasks from the displayed list that output some information will automatically have their output sent to the specified address. The "" entry in this field specifies that the sending the crontab messages option is disabled.