Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Creating a Daemon

Posted on 1998-11-09
4
282 Views
Last Modified: 2010-04-20
I need to make a process into a daemon either through the command line or programmatically.  (command line, preferred)

0
Comment
Question by:dpeng
4 Comments
 
LVL 2

Accepted Solution

by:
harrys earned 50 total points
ID: 1638458
from the comandline you could start it with
daemon&
which pushes it to the background.
in a program you would call fork() which starts a childprocess, then  inside the child  close the  stdin/stdout/stderr filehandles (see the manualpage of fork for details how
to detect who the child is..) and the child is you new daemon. inside the parent just
terminate the process.

0
 

Expert Comment

by:overcode
ID: 1638459
Linux Journal ran an article on daemons a while back, complete with code samples. It might be available on their web site.

-Reeves
0
 
LVL 2

Expert Comment

by:benten
ID: 1638460
What do you mean by a daemon?  Most programs that are considered daemons first fork a new process, orphan the child (by having the parent exit), close all the file descriptors and reset the session ids.
0
 

Author Comment

by:dpeng
ID: 1638461
Alright I'll try it out.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction We as admins face situation where we need to redirect websites to another. This may be required as a part of an upgrade keeping the old URL but website should be served from new URL. This document would brief you on different ways ca…
The purpose of this article is to demonstrate how we can use conditional statements using Python.
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question