Sponsored Content
Full Discussion: What is a daemon process?
Top Forums Programming What is a daemon process? Post 16250 by Perderabo on Wednesday 27th of February 2002 09:49:09 AM
Old 02-27-2002
A daemon process has no controlling terminal. It cannot open /dev/tty. If you do a "ps -ef" and look at the tty field, all daemons will have a ? for the tty.

Most daemons tend to last a long time, be owned by root, and do something useful. But you really can't count on any of these thing being true.

The lack of a controlling terminal is the real defining characteristic.
This User Gave Thanks to Perderabo For This Post:
 

10 More Discussions You Might Find Interesting

1. Programming

Daemon process

Hi, 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... (2 Replies)
Discussion started by: s_chordia
2 Replies

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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
DNSServiceProcessResult(3DNS_SD)		      DNS Service Discovery Library Functions			  DNSServiceProcessResult(3DNS_SD)

NAME
DNSServiceProcessResult - process results and invoke callback SYNOPSIS
cc [ flag ... ] file ... -ldns_sd [ library ... ] #include <dns_sd.h> DNSServiceErrorType DNSServiceProcessResult (DNSServiceRef sdRef); DESCRIPTION
The DNSServiceProcessResult() call reads the returned results from the mDNS daemon and invokes the specified application callback. The sdRef points to a DNSServiceRef initialized by any of the DNSService calls that take a callback parameter. The DNSServiceProcessResult() call blocks until data is received from the mDNS daemon. The application is responsible for ensuring that DNSServiceProcessResult() is called whenever there is a reply from the daemon. The daemon may terminate its connection with a client that does not process the daemon's responses. RETURN VALUES
The DNSServiceProcessResult() call returns kDNSServiceErr_NoError on success. Otherwise, an error code defined in <dns_sd.h> is returned to indicate the specific failure that has occurred. ATTRIBUTES
See attributes(5) for description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
DNSServiceBrowse(3DNS_SD), DNSServiceRegister(3DNS_SD), attributes(5) SunOS 5.11 20 Aug 2007 DNSServiceProcessResult(3DNS_SD)
All times are GMT -4. The time now is 01:34 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy