I like to know how I can save or export all of my devices configurations to an FTP server for example.
Cisco Prime LMS 4.2 appliance.
IF you have Cisco Prime LMS 4.2, you can configure it to take a backup of your configuration automatically. It is readily configured to do so out of box and once the device is added to ciscoworks. This is possible using Configuration Management feature in LMS.
Configuration Management in Cisco Prime LAN Management Solutions (LMS) allows you to manage, deploy, and modify the configuration files used by devices in your network. You can run tools that can compare configuration files and perform software image management tasks.
For more details check Archiving Configurations and Managing them using Configuration Archive.