Is there a lightweight virtualized Linux or other unix environment that I can run on the iPad? Like VirtualBox for iPad. I only really need a minimal system — something along the lines of Microcore Linux, so no X server or anything like that. Just a console with a reasonable C compiler; if gcc is not available, tcc (Tiny C Compiler) or something like it would be fine.
I'd really like it to be virtualized so that I don't inadvertently mess up my iPad by playing with the linuxbox inside.