Visit Our UNIX and Linux User Community

Daemon process

Thread Tools Search this Thread
Top Forums Programming Daemon process
# 1  
Old 12-26-2001
Network Daemon process

I have to write a daemon process, which performs certain operations in the background.
Now since it performs operations in the background, it should not display anything to the standard output.
The problem is that it still displays, text on standard output.
Can anyone tell me (it is urgent) how to avoid this.
I have written the following function to initialize the daemon code ...

int pid, fd;

if (getppid() == 1)
goto out;

#ifdef SIGTTOU
#ifdef SIGTTIN
#ifdef SIGTSTP

pid = fork();
if (pid < 0)
return -1;
else if (pid > 0)
/* In parent exit leaving the child to work */

if (setpgrp() == -1)
return -1;
signal(SIGHUP, SIG_IGN);

pid = fork();
if (pid < 0)
return -1;
else if (pid > 0)
/* first child exits */

/*for (fd = 3; fd < NOFILE; fd++)
/* In child detach from the parents session */

return 0;
# 2  
Old 12-26-2001
This has been discussed. If you had used this site's search function you would have found this post.
# 3  
Old 01-17-2002

If the daemon process is still sending text to the o/p , i think u can direct the o/p of the daemon
process to /dev/null and i think it shouldn't
be a problem

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

Daemon process

I wish to make a process run in the background, but only one instance of it, and not many, so when the program is loaded, it has to check whether another instance of the same program is running and if so to exit. How do I do this ? (4 Replies)
Discussion started by: sundaresh
4 Replies

2. Shell Programming and Scripting

run this script as a daemon process

Hi, HI , I have a simple script that moves files from one folder to another folder, I have already done the open-ssh server settings and the script is working fine and is able to transfer the files from one folder to another but right now I myself execute this script by using my creditianls to... (3 Replies)
Discussion started by: nks342
3 Replies

3. UNIX for Advanced & Expert Users

Needs help in launching a console application with the help of daemon process

Hi All, I am facing problem in launching a application with the help of a daemon process. Actually the application is based on command line that reads various commands for controlling the application from the console and accordingly executes those commands. The application always interact with... (3 Replies)
Discussion started by: gopallinux
3 Replies

4. Shell Programming and Scripting

Diff between Bg and daemon process

Dear Unix Gurus, Plz provide major diff between background process and daemon process. Is it control available for daemon process?. (3 Replies)
Discussion started by: kkl
3 Replies

5. Programming

How to find if a process a daemon ?

I have a scenario where I need to find if a process is a daemon process or not. This check needs to be done from within the process. I know there are no direct API's to do so. I have explored these options. 1. ctermid() - this can be unsuccessful as per the man pages 2. int devtty; if ((devtty... (7 Replies)
Discussion started by: vino
7 Replies

6. UNIX for Dummies Questions & Answers

How to write Pro*C daemon process using multithreading?

Hello, I am new to this forum and this is my first post here... I have never worked on either Pro*C or Multithreading..Now, i have to write a Pro*C, Multithreading daemon process.. I dont know where to start.. Can anybody help me with examples? 1. need to write a Pro*C multithreading... (0 Replies)
Discussion started by: kachiraju
0 Replies

7. Shell Programming and Scripting

How to starting process as daemon using ssh command?

Hello, I need to run a command on remote Linux using the ssh command from my local machine. I am able to execute the command on remote machine using ssh but it's behaving strangely. The command is supposed to start a daemon process on remote linux box and the control should return back to me... (5 Replies)
Discussion started by: nitinshukla
5 Replies

8. Linux

daemon process

how i will write the daemon process,if any body have sample daemon process send me. (1 Reply)
Discussion started by: suresh_rupineni
1 Replies

9. UNIX for Advanced & Expert Users

zombie daemon process!!

My daemon process is the child of init and init has the responsibility to remove it, once it turns zombie. But I want to ask why the daemon process which is child of init turns zombie in the first place. What measures I have to take to avoid this? rish (1 Reply)
Discussion started by: rish2005
1 Replies

10. Programming

What is a daemon process?

This is gonna seem really silly to almost evryone here - but I need to know : what is a daemon process? Thanks (6 Replies)
Discussion started by: Kanu77
6 Replies

Featured Tech Videos