Computer program that runs as a background process, rather than being under the direct control of an interactive user.

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258 views

How to setup a simple email daemon with autorespond and mail forwarding?

Since my mail provider unfortunately offers neither an autoresponder nor forwarding mail to others during vacancy, I'd like to setup e.g. a RaspberryPi to regularly check my mail account (via POP3 or ...
3
votes
2answers
8k views

What is log_daemon_msg ?

I was looking through /etc/init.d/ssh to get an idea of how a "proper" sys daemon is run at boot (I'm trying to add svnserve to that list). I saw this log_daemon_msg used as a command, but I have no ...
1
vote
1answer
887 views

How do I write a login daemon?

There are many guides to the steps for correctly launching a daemon process, such as Stevens' chapter in Advanced Programming in the UNIX Environment. There is less agreement on what steps should be ...
9
votes
1answer
960 views

Why does “su -c <command> &” seemingly allow a command to run in the background without hanging up

I was helping a colleague who was having problems with a background process intermittently dying. I found out that they were starting the background process by logging in to the server and executing: ...
4
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1answer
3k views

How to manage fedora services and daemons using the GUI?

I am using Fedora 17, I need a GUI program to start/stop and enable/disable services and daemons. I have installed "system-config-services" but it did not have enable/disable feature(run it with ...
7
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2answers
3k views

How to set OOM killer adjustments for daemons permanently?

Running some Linux servers with single or just a few vital system service daemons, I would like to adjust the OOM killer for those daemonized processes in case something odd happens. For example, ...
26
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4answers
3k views

What's the difference between running a program as a daemon and forking it into background with '&'?

What are the practical differences from a sysadmin point of view when deploying services on a unix based system?
2
votes
2answers
4k views

/etc/init.d/script, or /etc/inittab - respawn on die

I have a daemon/service (milter-regex), that is dying. I'm only using it temporarily (A few months), so don't care too much, but I want it to restart when it dies. It is an init.d script. 'service ...
9
votes
4answers
16k views

How to check that a daemon is listening on what interface?

Ex.: an sshd is configured to only listen on wlan0. So. Besides checking the sshd_config how can I check that a daemon is listening on what inerface? netstat can do it? how? (OS: openwrt or scientific ...
18
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6answers
37k views

Ubuntu12.04: How to disable a daemon process at startup

I normally use service start/stop or initctl start/stop to start or stop a daemon process but now what I am looking for is to disable a daemon process from starting at startup example mysqld. ...
1
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0answers
236 views

Upstart: How to respond to startup of a service, thats not part of Upstart?

I'm running Ubuntu server and playing around with Upstart. I have installed PostgreSQL database server which doesn't use Upstart system, however im also writting an Upstart script that starts another ...
6
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2answers
3k views

Is there an easy way to create a FreeBSD rc script?

I have a FreeBSD jail in which I run a server using the command: /usr/sbin/daemon /path/to/script.py At the moment I have to run this command every time I restart the machine and the jail starts. ...
1
vote
2answers
4k views

Auto Start MySQL and Apache

How does one get certain daemons to automatically startup on a restart of the server? I found this post on Server Fault but I am looking of a more in depth explanation of how getting a daemon to auto ...
2
votes
1answer
228 views

Why does Redhat's daemon function not have a group setting?

Background: I'm a Ubuntu/Debian fan and most of my development experience has been on that platform but my current employer uses Redhat. I needed to write a simple init.d script and want the ...
1
vote
1answer
1k views

What does `avahi-dnsconfd` daemon?

I've installed KDE desktop, that depends on avahi. It has two daemons avahi-daemon and avahi-dnsconfd. In ArchLinux wiki there is no info about avahi-dnsconfd. I've tried Daemon and Avahi pages.
8
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3answers
666 views

is there something like a per-user daemon?

I need to run some background processes that live as long as I am logged in with a certain user. Does there exist something like a per-user daemon? I know only of global daemons that live from ...
1
vote
1answer
2k views

Why does Ubuntu store the daemon logs on /var/log/daemon.log.1 instead of /var/log/daemon.log?

Pretty much what the title says. Trying to cat /var/log/daemon.log doesn't produce any output, while cat /var/log/daemon.log.1 does. Why do daemons store logs to the /var/log/daemon.log.1 file instead ...
2
votes
1answer
453 views

How to log processes in daemon-mode?

I would like to save the standard output of the program motion in a text file. If I don't use motion in daemon-mode I would simply do it by: motion > log.txt But what is the equivalent when I ...
3
votes
1answer
3k views

Heartbeat 3 binding socket error

I've been tying to install Heartbeat3.0.5+Pacemaker1.0.12 on CentOS 6.3 64bit via yum. The installation seems to be successful, but there is a problem when starting Heartbeat. I put some info related ...
4
votes
4answers
918 views

How to prevent atd from running past jobs?

The at daemon is a great tool! However, if a job is scheduled for 8:00 am and the machine is off at that time, at will run the job whenever the machine is booted. What I would like to do is stop it ...
6
votes
1answer
2k views

How Do I Add My Own Daemons in Arch Linux? (BSD-style init)

I have created a symlink to a start/stop/etc. wrapper bash script in /etc/rc.d, added it to DAEMONS=() in rc.conf, but the process it points to isn’t starting on boot, and isn’t showing up in the ...
4
votes
2answers
236 views

Is it good practice to create a background job within an init script if the process can not daemonize itself?

I am fairly new to *nix, and have come across the need to drop multiple processes, that should be run 100% of the time. to background using &. I use the following line in an init.d script to do ...
2
votes
1answer
1k views

daemon function in /init.d does not run the program in the background in fedora13

I use Fedora 13 and am trying to create a service for darkice. I put the script in the /etc/init.d directory and if I use the command service darkice start, the darkice is running in the foreground ...
3
votes
1answer
590 views

Running a command at startup

I recently came across "remind" in Linux. I liked it almost immediately, but for my reminders to pop up, I needed to run 'remind' in daemon mode. Done quite simply using the following command: remind ...
17
votes
10answers
27k views

How to run Dropbox daemon in background?

I'm using Debian 6 and Dropbox. I followed these commands to install it. When I run ~/.dropbox-dist/dropboxd — Dropbox works and stuff. Problem is that when I close terminal or, even worse, — ...
5
votes
2answers
4k views

Running piped bash script in background

I'm attempting to build a monitoring script to watch localhost communication using netcat. I have two scripts that I've built, one to start the monitoring loop and one for the loop itself. They are as ...
5
votes
4answers
1k views

Is there a JVM daemon?

I'm curious, is there a JVM which runs as an OS daemon, and forks when a new process should be started in it ( i.e. like init, or zygote process on Android )? If no, why not? I am not talking about a ...
2
votes
1answer
673 views

Preventing ChromeOS from blanking the screen when working on a different tty

I am running Archlinux in a chroot alongside Chrome OS on a chromebook. The original project is there, my fork of it is here (mostly similar). The issue is that the display power management of Chrome ...
6
votes
1answer
376 views

Is it possible to write portable service scripts to control a daemon?

I (or one of my colleagues) need to write one or more shell scripts to control the execution of a daemon. We need to be able to start the daemon, tell it to gracefully shut down, and force a shutdown. ...
2
votes
5answers
4k views

How to stop a program running as daemon

I have launched iperf in daemon mode with iperf -s -D and now I want to stop the service. I tried to use sudo kill pid but it neither work nor complain. The daemon is still running when I check ...
3
votes
1answer
832 views

Cancelling execution of daemons during boot

During boot a series of predetermined daemons (such as dbus, hal, network) are started. Whenever I'm not connected to an Ethernet cable the network service will obviously fail, but before failing it ...
1
vote
2answers
4k views

Can't start mysqld

I've installed mysql through $ sudo apt-get install mysql-server-core-5.1 $ sudo apt-get install mysql-client-core-5.1 This is my current conf file And the service won't start, at first the ...
4
votes
2answers
5k views

Make daemon start up with Linux

I'm writing a simple daemon application using C/C++ and I want it to start when Linux starts up. I am a beginner on Linux systems. I have tried to modify /etc/init.d/skeleton to add a script into ...
0
votes
3answers
456 views

Prevent init daemon echoing on TTY

Below is an init script which starts/stops a daemon. The daemon is unfortunately printing the parsed packet data (from /home/nuthan/program/server), a socket server written in perl, listening to a ...
3
votes
5answers
4k views

How can I run a daemon with custom parameters

I am wondering how I can run a daemon, in this case NTP, with custom parameters. For example in my Ubuntu PC I observe that I've got ntpd running this way: $ ps aux | grep ntpd ntp 5936 ... 0:00 ...
1
vote
2answers
377 views

Simple feed aggregation server

I’m looking for a program that runs as daemon, downloads Atom and RSS feeds at least every minute, and provides a paginated Atom feed of all entries of all feeds through a simple HTTP server. It ...
1
vote
2answers
402 views

How to log the output of a daemon application?

I have a Java program running as a daemon (thanks to YAJSW, a wrapper for java). The thing is that this java application writes several lines of console text, (simply imagine a Hello World App). If I ...
3
votes
1answer
1k views

How to make SSH tunnel as daemon?

Actually, I need a secured VPN, but configuring it was too hard for me. So I decided to use SSH tunnel. The tunnel could be established when I logged in. :( (1) How can I make a SSH tunnel without ...
6
votes
2answers
4k views

How to run a C program as a daemon?

I have a C program which I want to run as a daemon. How do I install it so it will run as a daemon on CentOS? Someone said to use @reboot, and some said to put it in /etc/rc.d/rc.local. Which is the ...
8
votes
2answers
730 views

What's the difference between udev and hald?

I'm just beginning to dive into the internals of Linux, and I was wondering what the difference is between udev and the hal daemon. From what I gather, both seem to be responsible for managing hot ...
1
vote
2answers
410 views

process works without ampersand but doesn't work with ampersand

I wrote a small script to run as a daemon, everything seems to work when I run the command in unix: php script.php everything seems to work correctly, when I terminate that script and us the ...
3
votes
2answers
4k views

Using nohup at /etc/init.d/service

I have been trying to create a daemon using /etc/init.d/myservice and it will call a shell script that contains nohup within the script line. Will it affect it if I could do service stop later?
3
votes
2answers
2k views

gnome-keyring-daemon couldn't allocate secure memory

I run logcheck on my Debian Linux system to get alerted to unusual lines in my log files, and recently I saw the following in /var/log/messages: gnome-keyring-daemon: couldn't allocate secure memory ...
2
votes
0answers
138 views

What is the recommended way of start and supervise daemons on Arch Linux? [duplicate]

Possible Duplicate: Ensure a process is always running At the moment I use a quick and dirty nohup ... & to start application and database servers. E.g. su - foo -c "nohup php-cgi -b ...
5
votes
2answers
8k views

rpc.statd running on system not using NFS

I have a Debian machine that gets warnings (via the Tiger automatic auditor) that rcp.statd is listening on such-and-such socket. Googling shows rpc.statd is a daemon used by NFS. As far as I know, ...
1
vote
7answers
2k views

What's the cleanest way to schedule autoexec.bat like command in Linux?

I want to create a small script for my Linux system that would do some simple things on PC boot. The script is most likely going to be Python, but maybe I'll resort to C or shell. The problem is that ...