CosmOS
> dir          list what is on the disk
load <file>  read a program off the disk
run          start what was loaded
dump         sixty four bytes of memory, and again for more
             dump <program|data|bank> <address>
help         this
exit         stop
> greeting.txt            17
filler1.txt             8
filler2.txt             8
filler3.txt             8
filler4.txt             8
filler5.txt             8
filler6.txt             8
filler7.txt             8
filler8.txt             8
across.txt              700
empty.txt               0
aName22CharactersLong!  22
12 files
> > I do not know: frobnicate
> halted
Execution halted after 12376 cycles.
[exit 0]