How to keep a history of backups?

My intention is to create a "snapshot" of a certain hard drive on a server every day. How can I automatically make sure that the snapshot of today, three days ago, five days ago, 10 days ago (and so on) are being kept and cyclically replaced? I found a tool: duplicity, but I didn't find any way to achieve this using it. Should I go for a bash shell script? Is there any example I can take inspiration from? The system is running Debian.