If you need to run scripts on your site at specific time, use the task scheduler facility on the server to make the system automatically run the scripts for you.
To schedule a task:
You can schedule the time using the UNIX crontab entry format. In this format, you can
To schedule the task to run every Nth period, enter the combination */N, where N is the legal value for this field (minute, hour, day, month). For example, */15 in the Minute field schedules the task to start every 15 minutes.
You can type the contracted names of months and days of the week, which are the first three letters: Aug, Jul, Mon, Sat, etc. However, the contracted names cannot be separated with commas or used together with numbers.
To temporarily suspend execution of scheduled task:
To resume execution of scheduled task:
To unschedule a task: