OSDev.org

here is a link of gbaunix project a unix native port to gameboy advance
http://www.kernelthread.com/publications/gbaunix/

really fun (^_^)Y

nice...
but i think it isn't very usefuly.... you have more than 2 houres to type in the right command, or not? ^^

not sure, i think think they coded a shell with precompiled commands, which u can select using arrow buttons