Hi, You can make your own fifo's by doing the following: cd $GISBASE/dev ($GISBASE is the dir where GRASS resides) mknod fifo.1a p (don't forget the p!!!) chmod 666 fifo.1a do the same for the other fifo's you need (have a look at the file $GISBASE/etc/monitorcap) Ronald Wiemer ARCHIS, Amersfoort The Netherlands