No, there’d be no way to install and run it if you are only using shared hosting account. You would need the ability to log on and make changes. However, you could always look into alternatives like using an external MongoDB hosted service such as MongoHQ. That way, you can still use MongoDB. The downside … Read more
Try prepending “nohup” to script.sh. You’ll probably need to decide what to do with stdout and stderr; I just drop it in the example. import os from subprocess import Popen devnull = open(os.devnull, ‘wb’) # Use this in Python < 3.3 # Python >= 3.3 has subprocess.DEVNULL Popen([‘nohup’, ‘script.sh’], stdout=devnull, stderr=devnull)
Suddenly… I found why. According to much more source code of ThreadPoolExecutor: # Workers are created as daemon threads. This is done to allow the interpreter # to exit when there are still idle threads in a ThreadPoolExecutor’s thread # pool (i.e. shutdown() was not called). However, allowing workers to die with # the interpreter … Read more
I just wrote the following code as a test: public class DaemonThreadPlay { public static void main(String [] args) { Thread daemonThread = new Thread() { public void run() { while (true) { try { System.out.println(“Try block executed”); Thread.sleep(1000l); } catch (Throwable t) { t.printStackTrace(); } } } @Override public void finalize() { System.out.println(“Finalize method … Read more
Though you have already answered your own question, I would still like to elaborate more on it. In C# .NET, unlike in Java C# Background threads ~ Java Daemon threads C# Foreground threads ~ Java User threads By default, threads you create explicitly are foreground threads. “Background threads are identical to foreground threads, except that … Read more
A daemon is a background, non-interactive program. It is detached from the keyboard and display of any interactive user. The word daemon for denoting a background program is from the Unix culture; it is not universal. A service is a program which responds to requests from other programs over some inter-process communication mechanism (usually over … Read more
Docker 19+ Config file is now available in ~/.docker/daemon.json (see Ed’s Answer) Docker EE/CE 17+ Docker for Mac/Windows has added a config editor to the tray icon UI to allow editing of Dockers daemon.json file that will be persisted in the VM. To access it go to the Docker Icon > Preferences > Daemon > … Read more
Java class: package example; import java.util.Date; import java.util.Timer; import java.util.TimerTask; import org.apache.commons.daemon.*; class EchoTask extends TimerTask { @Override public void run() { System.out.println(new Date() + ” running …”); } } public class Main implements Daemon { private static Timer timer = null; public static void main(String[] args) { timer = new Timer(); timer.schedule(new EchoTask(), 0, … Read more
Rather than writing your own daemon, use python-daemon instead! python-daemon implements the well-behaved daemon specification of PEP 3143, “Standard daemon process library”. I have included example code based on the accepted answer to this question, and even though the code looks almost identical, it has an important fundamental difference. Without python-daemon you would have to … Read more
The typical way of doing this in Unix is to double fork. In bash, you can do this with ( sleep 30 & ) (..) creates a child process, and & creates a grandchild process. When the child process dies, the grandchild process is inherited by init. If this doesn’t work, then your application is … Read more