OS X / Linux: pipe into two processes?

Question

I know about

program1 | program2

and

program1 | tee outputfile | program2

but is there a way to feed prog

Answer 1

The bash manual mentions how it emulates the >(...) syntax using either named pipes or named file descriptors, so if you don't want to depend on bash, perhaps you could do that manually in your script.

mknod FIFO
program3 < FIFO &
program1 | tee FIFO | program2
wait
rm FIFO