How can I automatically start a daemon at boot time.

Thread Tools Search this Thread
Operating Systems Linux Ubuntu How can I automatically start a daemon at boot time.
# 1  
Old 12-18-2008
How can I automatically start a daemon at boot time.

Hi masters,

I am still learning trades in kernel. I am trying to learn the basic of daemon programming. Can any one tell me how can I start a daemon automatically during boot up. I will be greatfull if anyone post some example code to the above task.
Also what are the other things that you must know when you try daemon programming? Can any one help me?
# 2  
Old 12-18-2008
a basic unix daemon does the following:

close all filedescriptors (stdout,stderr, etc)
chdir /
signal handeling (sighup, sigterm etc)
do stuff

(example in C: daemon.c)

Red Hat example on how to install startup scripts:

to start a deamon at system startup in redhat you need a init script.
it should be placed in /etc/init.d

example of init script :

# chkconfig: 3 99 1
# description: my daemon

case "$1" in

pkill mydaemon

pkill -HUP mydaemon


the first line will tell chkconfig to start the daemon in run level 3 with priority 99 and kill it as priority 1 when server shutdowns.

to install the startup script use the following: chkconfig --add ./scriptabove
Now it will start when the server boots.

to start it right away use: service <name_of_initfile> start

Hope this helps somewhat!

Last edited by s93366; 12-18-2008 at 05:38 AM..
# 3  
Old 12-18-2008
# 4  
Old 03-10-2009
How does it work on Solaris?

Hi s93366,

Thanks so much for the excellent tutorial. I works great on Linux environment. However, When I was trying it on Solaris environment, it doesn't work since there's no chkconfig on Linux. Do you have any idea on how to make it work on Solaris? I am new to Linux/Unix, and is learning Linux/Unix. Any help will be greatly appreciated.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Red Hat

Can't start NTOP service/daemon

I have installed version of ntop 4.0.3 by guide. But I can't start ntop daemon/service. I didn't find a service file for starting. During the installation there was no problem only want to RRDTool so I installed that. Now there is no necessary package required. I didn't find in /etc/init.d/... (9 Replies)
Discussion started by: getrue
9 Replies

2. UNIX for Advanced & Expert Users

start some services automatically

Hello All i have a question related to some services,i want to start some services with server linux centos. i make "chkconfig httpd on" and "chkconfig asterisk on",but when i verify with chkconfig --list i found httpd 0: off 1: off 2: on 3: on 4: on 5: on 6:... (6 Replies)
Discussion started by: bernard12
6 Replies

3. UNIX and Linux Applications

How do I Start postgre SQL automatically when boot my linux machine

Can any body give me the script to start postgre SQL 8.3.1 when boot linux? (2 Replies)
Discussion started by: shiraz
2 Replies

4. Shell Programming and Scripting

How do I Start JBoss automatically when boot my linux machine.

I have created a script file named 'start-jboss' ------------------------------------------------- #!/bin/sh # For starting Jboss JAVA_HOME=/home/argole/jdk/jdk1.6.0_10 export JAVA_HOME cd /home/argole/server/jboss-4.2.0.GA/bin echo "Starting JBOSS server" nohup ./ -c... (25 Replies)
Discussion started by: shiraz
25 Replies

5. AIX

How to start rstatd Daemon

guy's How to start rstatd Daemon on AIX 6.1 as I enable it from etc/inetd.conf then I refreshed it by this command refresh -s inetd but stil is not Active ! can some one advice in this ! (7 Replies)
Discussion started by: ITHelper
7 Replies

6. Shell Programming and Scripting

Start program in background (or start crontab ahead of time)

Hey! I'm working on a script that will add a user, create some configfiles, and add a crontab for the user. The crontab looks like the following: @reboot /home/user/program config.conf & I would like for this process to start at the end of my script under the corresponding username by... (0 Replies)
Discussion started by: noratx
0 Replies

7. HP-UX

HP UX start process at boot time

When I get start program at boot I read which run level /sbin/rcx.d runlevel=0.....x only read directory which directory name has UpperCase 'S' is not enough someone says that I need to reference another file which file I need to reference 1)/etc/rc.config.d/all file which parameter... (4 Replies)
Discussion started by: alert0919
4 Replies

8. Solaris

Database can't start automatically on solaris

Hi, I have installed oracle 9i on solaris 10 sucessfully. I have configured listener & tnsname.ora file sucessfuly. Even i can start database manully by starting listener first and from sqlplus promt data base sucessfully. Now i want to start the database automatically after system reboots. I... (2 Replies)
Discussion started by: Sachin Vaidya
2 Replies

9. UNIX for Advanced & Expert Users

start a process at boot up time

Hi, I have a program that check the IP address and automatic update it to the DNS server. I would like to run this program when the computer bootup after pppd get a connection. How do I add it to the init file. Does any one have any information of how to do it. I run a Linux Mandrake as a... (1 Reply)
Discussion started by: vtran4270
1 Replies

10. UNIX for Dummies Questions & Answers

Disable routed daemon at boot time????

I'm new to UNIX.... I'm running SCO UNIX and would like to disable routed daemon from being start at boot time. How should I do this????? Please help. (2 Replies)
Discussion started by: rrivas
2 Replies
Login or Register to Ask a Question

Featured Tech Videos