USB Key Duplicator

Hi All,

A bit off topic, any help will be appreciated.
Is there a way to duplication to multiple USB Memory Keys in Linux?  My
current config is:

OS: Fedora
HW: P4 2.8
  RAM: 256
  USB 2.0 (on mother board) = 4 ports
  USB 2.0 (PCI card) = 4 ports

The dd (e.g. dd if=/dev/sda of=/dev/sdb) command does it but only 1 Key at a
time.  Any idea how to duplicate multiple Keys at the same time?

Thanks!

Yousuf