Unfortunately the original user interface was using too much bandwidth so now we have the 'austere' version 2.0. If you'd still like to play with the UNIX command line we've hidden it here. Have fun.

UPDATE - The old interface is back up on the main page. Use the 'desktop' link in the upper right corner (seems to be broken on Firefox though... wtf... I need tech support).

UPDATE - The firefox problem with the UNIX simulator is fixed.