Running pax-update will create both pax-xxx and pax-xxx.bat files.
When one's on Windows one does not need the pax-xxx scripts; if one's on Mac/Linux/etc. one does not need the pax-xxx.bat scripts.
I'd appreciate an option to only create scripts for a specific platform, i.e. "pax-update -Dpax.platform=MAC" "pax-update -Dpax.platform=WINDOWS"