How to create a detached process in java on linux?
How to create a detached process in java on linux?
1 answer
by
emilia_hackett ,
a month ago
@clyde_reichert
To create a detached process in Java on Linux, you can use the ProcessBuilder class. You can follow these steps:
- Create an instance of ProcessBuilder class.
- Set the command and arguments that you want to run as a detached process using the command method.
- Redirect the standard output, error, and input streams to avoid any blocking issues.
- Set the working directory if needed using the directory method.
- Start the process using the start method.
- Call the detach method to detach the process from the current Java process.
Here is an example code snippet to illustrate the process:
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import java.io.File;
import java.io.IOException;
public class DetachedProcessExample {
public static void main(String[] args) throws IOException, InterruptedException {
ProcessBuilder processBuilder = new ProcessBuilder("path/to/your/executable");
// Set up any required parameters or environment variables
// processBuilder.environment().put("KEY", "VALUE");
// Redirect standard output and error streams
processBuilder.redirectOutput(new File("/dev/null"));
processBuilder.redirectError(new File("/dev/null"));
// Choose a working directory if needed
// processBuilder.directory(new File("/path/to/directory"));
Process process = processBuilder.start();
processBuilder.detach();
// Print the PID of the detached process if required
long pid = process.pid();
System.out.println("Detached process PID: " + pid);
// The Java process continues execution while the detached process runs independently
}
}
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Replace "path/to/your/executable" with the actual command or script you want to run.