CosmOS
> /abcdefghijklmnopqrst01> /abcdefghijklmnopqrst01/abcdefghijklmnopqrst02> /abcdefghijklmnopqrst01/abcdefghijklmnopqrst02/abcdefghijklmnopqrst03> /abcdefghijklmnopqrst01/abcdefghijklmnopqrst02/abcdefghijklmnopqrst03/abcdefghijklmnopqrst04> /abcdefghijklmnopqrst01/abcdefghijklmnopqrst02/abcdefghijklmnopqrst03/abcdefghijklmnopqrst04/abcdefghijklmnopqrst05> ...opqrst01/abcdefghijklmnopqrst02/abcdefghijklmnopqrst03/abcdefghijklmnopqrst04/abcdefghijklmnopqrst05/abcdefghijklmnopqrst06> ...opqrst02/abcdefghijklmnopqrst03/abcdefghijklmnopqrst04/abcdefghijklmnopqrst05/abcdefghijklmnopqrst06/abcdefghijklmnopqrst07> ...opqrst03/abcdefghijklmnopqrst04/abcdefghijklmnopqrst05/abcdefghijklmnopqrst06/abcdefghijklmnopqrst07/abcdefghijklmnopqrst08> 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
...opqrst03/abcdefghijklmnopqrst04/abcdefghijklmnopqrst05/abcdefghijklmnopqrst06/abcdefghijklmnopqrst07/abcdefghijklmnopqrst08> > halted
Execution halted.
[exit 0]