[GRASS-user] capacity

I am working with large data sets and having a hard time getting the system to manipulate my data. When I try to change spatial locations, or g.mlist data, it will give me errors like my "file name too long" after it lists about 100 of my raster files. The problem is I need to manipulate around 800 raster files at a time, is this possible, or will the system not accept this amount of data.
Aaron