Spawn a process in Java that survives a JVM shutdown

Question

I need to spawn a process in Java (under Linux exclusively) that will continue to run after the JVM has exited. How can I do this?

Basically the Java app should sp

Answer 1

I was having trouble with this and the launched process was getting killed when the JVM shutdown.

Redirecting stdout and stderr to a file fixed the issue. I guess the process was tied to the launched java app as by default it was expecting to pass its output to it.

Here's the code that worked for me (minus exception handling):

ProcessBuilder pb = new ProcessBuilder(cmd);
pb.redirectOutput(logFile);
pb.redirectError(logFile);
Process p = pb.start();