Predefined scheduling definitions
There are several special predefined values which can be used to substitute the CRON expression.
| Entry | Description | Equivalent To |
|---|---|---|
@yearly (or @annually) |
Run once a year, midnight, Jan. 1st | 0 0 1 1 * |
@monthly |
Run once a month, midnight, first of month | 0 0 1 * * |
@weekly |
Run once a week, midnight on Sunday | 0 0 * * 0 |
@daily |
Run once a day, midnight | 0 0 * * * |
@hourly |
Run once an hour, beginning of hour | 0 * * * * |
@reboot |
Run at startup |
* * * * * command to be executed ┬ ┬ ┬ ┬ ┬ │ │ │ │ │ │ │ │ │ │ │ │ │ │ └───── day of week (0 - 6) (0 is Sunday, or use names) │ │ │ └────────── month (1 - 12) │ │ └─────────────── day of month (1 - 31) │ └──────────────────── hour (0 - 23) └───────────────────────── min (0 - 59)