linux - Is it possible to run a bash script in java from systemd daemon service

Question

I want to run Java exec when the code is running as a systemd linux ( Ubuntu 18.04 ) service, is that possible? If it is possible, how? Right now, my code is running if I run the code in the terminal, it calls the bash script and bash script does the job. However, when my program is running as a systemd service, it hangs and bash script does nothing. Any ideas? The bash script will be called from a server through a REST request by the way

I take the exec as;

String[] command = { "bash", "-x", "/some_script.sh" ,"argument1"};
        ProcessBuilder probuilder = new ProcessBuilder( command );
    
        probuilder.directory(new File(System.getProperty("user.home")));

        Process process = probuilder.start();

        InputStream is = process.getInputStream();
        InputStreamReader isr = new InputStreamReader(is);
        BufferedReader br =  new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        System.out.println("Output of running %s is:
",
                Arrays.toString(command));
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }

        try {
            int exitValue = process.waitFor();
            System.out.println("

Exit Value is " + exitValue);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

question from:https://stackoverflow.com/questions/65884454/is-it-possible-to-run-a-bash-script-in-java-from-systemd-daemon-service

Answer 1

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