How could I startup an Impress autolooping presentation from the command line?

I’d like to script a set of continuously running presentations … that could form the basis of a presentation service …
Some starte hints and clues in either bash or python would be very helpful indeed

I don’t have any specific code snippets for you (yet), but my first thought would be to cron out a script that a) makes sure only one instance of the script is actively running; and then b) starts Impress passing parameters found in some other txt file holding the fully qualified name of the file to be launched. I’ll try to build something when I’m back at my office.