I'd like to invoke R using a fifo for input. The following unix commands gets me almost completely there: mkfifo R.fifo R --no-save <R.fifo >R.out in a separate window, I would enter the command eg printf "capabilities()" >R.fifo the expected output goes into R.out; but the process stops. How to I make R persist so I can send multiple commands to the fifo? Also, would this be possible in windows? // George -- George Georgalis, information system scientist <IXOYE><