i think that this is the part i need :
Scheduling Automatic Backups
To schedule automatic backups, use any operating system or third party task scheduling software to run the supplied backup script for your platform. Table 11-2 shows the name and path of this script for each platform.
Platform Backup Script Name and Path
but how to use my os to run the file automatically every 10 days for example ? this is not written in the manual .