CosmOS
> it says: hello there
finished
> it says: spelled out in full
finished
> it says: once more
finished
> Say.sbx                 156
dir.sbx                 156
notes.txt               21
notes.sbx               21
4 files
> not a program
> not a program
> I do not know: notes.txt
> I do not know: nosuchprogram
> I do not know: abcdefghijklmnopqr
> I do not know: abcdefghijklmnopqrs
> dir          list what is on the disk
load <file>  read a program off the disk
run [words]  start what was loaded, and tell it those words
<name> [words]       look where you are and then in /Apps, and start that
cd [path]    go to a directory, or to the root with nothing after it
mkdir <path>         make a directory
rmdir <path>         remove an empty one
do <file>    run the lines in a file, which must start with #!
echo [words] say them
delete <file>        take it off the disk
rename <file> <to>   call it something else
monitor      look at memory, change it, and jump into it
help         this
exit         stop, or leave the monitor if you are in it
> halted
Execution halted.
[exit 0]