Java : Running shell script in background
nohup applies to invocations from the shell, not from a calling program.
There are probably a lot of ways to solve this, but one that springs to mind is to try modifying your Java code to invoke a launcher shell script that invokes the nohup runner.sh... code (without needing to launch sh).
Something like this (untested) code:
Revised Java:
////// Tries to run a script in the background///try { Runtime rt = Runtime.getRuntime(); Process pr = rt.exec("sh ./launcher.sh", new String[] {}, wrkDir); // pr.waitFor(); // Intentionally not using} catch(Exception e) { throw new RuntimeException(e);}launcher.sh
#!/bin/shnohup ./runner.sh > output.txt &I'm not sure about the redirection here, but if this works (as I mentioned, this solution is untested), the downside would be that you lose feedback from attempting to invoke runner--any errors in that script invocation will be unavailable to your Java process.