[EP-tech] sum of files-size belonging to one eprint/course

[avischai.stenger at ulb.tu-darmstadt.de (Stenger, Avischai)]

Hi all,

i would like to get a monthly Email with statistics about the size used on the hard disk for each ?course?.

Is there a way to find the size of ALL files belonging to one eprint ? 
all files belonging to all eprints belonging to one ?course??

i tried getting it direct out of the database but it seams there is no unique connection between an eprint-record and the files-records uploaded for it (the connection i found was field ?fileinfo? in eprint-table, but as a ?filename? in file-table is not unique, this dosen?t really help) 




Tanks



Avi