This is a simple smartcard shell that has evolved from a more convenient way to enter APDUs (compare: pcsc-tool scriptor) through a tool to open a secure channel to a cyberflex card (hence the name) to a more generic tool to act on smart-cards. It is written in Python (you might need 2.4 or up) and needs pycsc to communicate with the smart card terminal (with PC/SC, e.g. pcsc-lite). You can get pycsc from http://homepage.mac.com/jlgiraud/pycsc/Pycsc.html