CosmOS
> ls
greet.sbx      hello.sbx      Life.sbx       Snake.sbx      Keys.sbx
Say.sbx        Where.sbx      Break.sbx      Grid.sbx       Press.sbx
Mode.sbx       Flip.sbx       Sprite.sbx     Depth.sbx      Packages/
Pad.sbx        Crash.sbx      vars.script    blocks.script  loops.script
tune.sbx       Play.sbx       notes.txt      Apps/          hi.script
bad.script     plain.script   cross.script   nonl.script    outer.script
inner.script   loop.script    hush.script    aloud.script   args.script
pass.script    holds.script
finished
> cd /Apps
/Apps> ls
Copy.sbx   Say.sbx    Where.sbx  Walk.sbx   ls.sbx     Lander     where.sh
finished
/Apps> cd /
> ls /Packages/app.Lander
Lander.sbx   splash.tune
finished
> mkdir /empty
made
> cd /empty
/empty> ls
finished
/empty> cd /
> ls nowhere
there is no such directory: nowhere
finished
> exit
halted
Execution halted.
[exit 0]