for(var i=0;i<8;i++) ls ${i}

for(var i=0;i<2;i++) for(var j=0;j<2;j++) for (var k=0;k<2;k++) for (var l=0;l<2;l++) ls ${i}/${j}/${k}/${l}

This did nothing, so I'm not sure if you fixed it or just placed a cap on how much js you are executing... (should have at least shown 16 frames)

for(var i=0;i<8;i++) for(var j=0;j<8;j++) for (var k=0;k<8;k++) for (var l=0;l<8;l++) open ${i}/${j}/${k}/${l}

Is/was producing a nice log of things not opened...of course my browser tab is busy logging 6 GB+ of history (does your terminal have a scrollback limit?)

Cute game, maybe I'll try to open the box later after I get some sleep. Not sure what I would use the terminal for, though - is basically what you're trying to do an interactive scratchpad with history?

If that's the case, I would look into Jupyter e.g., I'm not sure I get the point otherwise.