Help for backup and archiving

Hi,

I am trying to develop a KSH script, to perform the following functions:

  1. ZIP the previous day backup to ZIP Directory, while removing any ZIP file older than a week.

  2. Perform the backup.

  3. Send a confirmation mail with subject content of the size of file.

Please let me know "just" the format, as I will do it myself as there needs to lot of customization.

Thanks, John