websvc.sh is the file that should be run for your web service daemon.
It should be setup to run as a service on each boot of the unit.
You can start and stop (which you have to do if you change any HTML pages) by
typing one of the following:
sudo services stop piwebservice
sudo services start piwebservice
sudo services restart piwebservice

picup.sh is the shell script that will copy the files up to FTP server.
It is called from the picuphosts.py script.
