I’m not exactly sure and can’t test right now due to the UseGalaxy.org server being down for maintenance today.
Once back up – I would test to see if the upload string will accept standard unix commands, something like one of these.
Per n
…/data/*n*
Per file extension
…/data/*.cell
…/data/*.param
This would probably fail due to the . and .. and any other dot files getting picked up.
…/data/*
Let us know what you think. That tool can be updated if there is a use case we missed on the first pass. We liked FTP too but had to change out for alternative methods due to updated security requirements on our academic services.