Building a process pipe with ProcessBuilder in Java 7

Question

I\'ve been trying to figure out how to pipe a few processes in Java using the new ProcessBuilder. I can\'t find a suitable example of what I want to do and when

Answer 1

You don't need a pipe in this case.

"grep bla test.txt"

however assuming you need a pipe, you need to use a shell like bash

"/bin/bash", "-c", "grep foo text.txt | grep bar"

Answer 2

Start a child thread for each Input-/OutputStream pair with a simple copy loop in run().