When typed in the Director shell window, this command can be used to change the working directory where DetCom saves FITS files.
Without any arguments, the current working directory is displayed.
When typed in the Director shell window, this command lists files and subdirectories in the current directory.
The director shell window can be ``cloned'' by others with access to the local machine (and not necessarily having access to the observing account.) The ``clone'' window is launched by typing
director -k observer
where observer is the username of the observer who is running the ``master'' director. The user running director -k need not be the same, but they will have permission to only send say commands unless they know the observer password.
The say command can be used by engineers and observers to send messages back and forth. These messages can be sent at any time, even if DetCom is processing a command or in the middle of an exposure.