Questions tagged [daemon]

Daemons are programs which run in the background in multitasking operating systems. On Unix-like operating systems the names of many daemons end in the letter "d".

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78 votes
6 answers
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What's the difference between docker.io and docker?

Trying to learn docker here but I am a bit confused on what the difference is between docker.io and docker. Is docker.io the daemon server and docker the client? Why does the daemon need to run all ...
Pithikos's user avatar
  • 1,604
50 votes
9 answers
136k views

How to automatically restart a linux background process if it fails?

I have a process which is executed by init.d script on the background. Eg: case "$1" in start) /bin/myprocess & stop) killall myprocess restart) killall ...
Honza's user avatar
  • 603
37 votes
4 answers
17k views

How does WSL/WSL2/WSLg work without systemd?

As I've understood it, systemd is Linuxes' "master"-daemon, managing all other processes right after it has been started up and run its init-function. Since I had this (now resolved) issue, ...
Caeleste's user avatar
  • 821
31 votes
3 answers
50k views

Start a systemd user service at boot

I am trying to start a systemd service for a specific user (service name/goal is not relevant). I do that because I need to have a per user process of an application running at startup. Here is what I ...
Jesus_21's user avatar
  • 411
31 votes
5 answers
105k views

How to monitor a service and restart if stopped in Linux

Actually I'm not so sure whether i should use Shell Scripts, or if there some ways already. But whatever approach we use, i would like to keep a Service running all the time. Let's say apache2 as an ...
夏期劇場's user avatar
26 votes
3 answers
85k views

How do I prevent Linux services from auto-starting?

I have recently migrated from Windows to Linux (xubuntu) I am a developer and have installed everything I need, LAMP. In Windows I used to turn off all unnecessary services - I don't need the Apache ...
Aviv's user avatar
  • 750
15 votes
2 answers
97k views

cant start systemd - Failed to get D-Bus connection

I am trying to setup a daemon width systemd on Debian. systemd was already a part of the distro.. Have just added a new unit file my-daemon.service under /etc/systemd/system/ but after reboot I get ...
clarkk's user avatar
  • 439
13 votes
3 answers
11k views

What do the [..] mean in 'ps' and how do you create a process like it?

When running ps, you get something like: root 2 0.0 0.0 0 0 ? S< 00:00 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S< 00:00 0:00 [ksoftirqd/0]...
user626201's user avatar
13 votes
2 answers
26k views

Pulseaudio Daemon Startup Failed

When running startx on Arch Linux, the error: E: [pulseaudio] main.c: Daemon startup failed. is returned. Is there any way to fix this error?
Kevin Gurney's user avatar
12 votes
8 answers
31k views

The '/var/run/supervisor.sock' file is not being created when I use Supervisord

I'm running Supervisord on my Ubuntu 14.04 server and everything works fine. I deploy using a git push and upon deployment I also need to restart my application server (gunicorn) which I can ...
kramer65's user avatar
  • 1,424
9 votes
1 answer
38k views

Linux permissions for services

How do permissions work for services in Linux? I already know that I can set read, write and execute permissions for files and directories with chmod each for owner, group and other users but how do ...
Gigitsu's user avatar
  • 303
8 votes
4 answers
6k views

Bash-script as linux-service won't run, but executed from terminal works perfectly

I have custom script to mount google drives. Part of this script, is following code: if [ ! "$(which google-drive-ocamlfuse)" ] then echo "Install google-drive-ocamlfuse first!" exit 1 fi ...
rah606's user avatar
  • 93
8 votes
1 answer
13k views

Stop a runaway launchd process on OS X Leopard

I created a launchd .plist file to in order to have a python script run every hour. I ended up editing and later deleting the .plist file ( in /Library/LaunchDaemons )... but somehow launchd is still ...
CaseyIT's user avatar
  • 3,361
8 votes
4 answers
23k views

Remote deluge daemon connection

I'm trying to follow this guide to run a deluge daemon on a headless server. The client part seems to be working, but the server part doesn't seem to work at all. Deluge-console is supposed to allow ...
Adam R. Grey's user avatar
7 votes
2 answers
5k views

Teamviewer-like SSH daemon

I have a computer at home with SSH installed which I would like to be able to control remotely. However, I am not able to allow SSH port forwarding through my router, so the only way to get in would ...
danielmhanover's user avatar
7 votes
1 answer
812 views

MacOS - "at" command is not working

I've started the atrun daemon using the following command. $ sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.atrun.plist Added my username to /var/at/at.allow file. $ cat /var/at/at....
pkgajulapalli's user avatar
7 votes
1 answer
4k views

Is it possible run Transmission daemon and Qt/GTK GUI at once in sync?

The title is the question. Originally this Ubuntu machine was meant to be headless, but I installed LXDE. Usually Transmission is run by the default GTK+ GUI. Instead of making sure the daemon runs ...
rautamiekka's user avatar
5 votes
1 answer
6k views

Increasing Yosemite maxfile limit for Application

I've been trying to up the maxfile limit and maxfileperproc limit on Yosemite, with no luck. I have created a sysctl.conf file in the etc folder, which has successfully increased the values when ...
toadstool333's user avatar
5 votes
1 answer
4k views

Supervisorctl stop all = stalled processes?

I'm running several PHP CLI scripts and monitoring them via Supervisor. When I use supervisorctl to monitor them, the scripts show like this: cleanup RUNNING pid 1805, uptime 0:00:41 ...
Lee Benson's user avatar
5 votes
1 answer
12k views

start ddclient as daemon with systemd

I'm trying to start ddclient as daemon in my Ubuntu 15.04, which now uses systemd, but was unable to even following the Ubuntu wiki at https://help.ubuntu.com/community/DynamicDNS to words. I've ...
xpt's user avatar
  • 8,651
4 votes
3 answers
5k views

need a bittorrent daemon

I'm building a Ubuntu server for the house. I want to centralize torrents. what I'm looking for is something that runs as a service (daemon) that has 3 folders to configure. Actively downloading ...
scphantm's user avatar
  • 173
4 votes
3 answers
4k views

Disabling syslogd in FreeBSD

I'm running FreeBSD in a very small VM with about 1.5G of space. I'd like to disable syslogd to save disk space, but there is no entry for it in /etc/rc.conf. service -e shows that syslogd is indeed ...
Lily Hahn's user avatar
  • 1,505
4 votes
4 answers
10k views

ubuntu server, trying to get a service/daemon to start

I followed the instructions here, but when I enter "sudo service mydaemon start". I get "mydaemon: unrecognized service". I have verified that the files are in the proper places, and I took the ...
davej's user avatar
  • 205
4 votes
1 answer
12k views

User Permissions: Daemon and User

I often run into this issue on Linux, and I'd love to know the proper way of solving it. Say I have a daemon running. In my example, I'll use LigHTTPD, a webserver. Some software, like Wordpress, ...
Eddie Parker's user avatar
  • 2,914
4 votes
1 answer
7k views

Where to log stdout and stderr of a daemon

I am writing my first linux daemon and I am wondering where to log its stdout and stderr. It is going to work for all users. I guess I could do it wherever I wanted, I just wonder if there are some ...
XNor's user avatar
  • 143
4 votes
2 answers
294 views

Copy Linux liveUSB causes errors with init.d scripts - Impossible..?

Please post your thoughts ideas or anything you may come up with. I would be very interested to see what anybody else is thinking. The Overall Problem When I install a simple Java application (that ...
3 votes
1 answer
4k views

Starting and stopping systemd services with OnCalendar for a period of time, every day

I have a two services (a video player and an image recognition daemon) that I want to start at 9am and finish running at 23pm every day (as well as on boot, although the system is going to be running ...
alexm's user avatar
  • 1,091
3 votes
1 answer
949 views

What benefits does daemonizing give me?

If I start something like uWSGI via SSH with my normal login user (assuming I should), and "daemonize" it, does that mean I can log out of SSH and uWSGI will remain running?
orokusaki's user avatar
  • 1,234
3 votes
3 answers
11k views

OS X - How to get simple launchd daemon working on Yosemite and El Capitan

I am no stranger to launchd on OS X. I've created several daemons in the past, last with Mountain Lion Mavericks. However, I seem to be struggling to get the most simplest of plists working on ...
Chris Harris's user avatar
3 votes
1 answer
1k views

inetd analog for Windows

Need a better analog of inetd daemon for Windows. Currently using http://sourceforge.net/projects/winetd/, but it's outdated with bugs present. Please recommend any better solutions for running your ...
Alex G's user avatar
  • 958
3 votes
0 answers
75 views

Manage processes on an distributed windows computer system

I want to manage the startup / re-start and shutdown of a multi module software system running on a set of windows machines. For example: [some machines booted, some still doing so] run the whole ...
beutelfuchs's user avatar
2 votes
5 answers
15k views

Easy way of daemonizing in CentOS 5.4

I know there is a program called upstart that can make it easy to make small daemons. I can't get this program to configure on CentOS. I get all sort of errors concerning pkg-congfig, libnih, and dbus....
Saif Bechan's user avatar
  • 3,315
2 votes
1 answer
4k views

Running – or only starting – a daemon using launchd

I'm trying to set up YouTrack on OS X Lion Server and have it launch at boot using launchd. I have downloaded the YouTrack jar file which I can successfully run from the command line using java -...
Simon's user avatar
  • 123
2 votes
2 answers
3k views

How can I find out what IRC Daemon a certain server is running?

To get an overview on IRC, I wanted to find out what kind of IRC server software/daemon (like unrealircd) runs on a certain server. Is there a possibility to get this information?
JohnnyFromBF's user avatar
  • 4,938
2 votes
2 answers
386 views

How's responsible for displaying `Starting ... [ ok ]`

When I start a service such as: root@foo [~]# service foobar stop Stopping Foobar: [ OK ] I can see a status indicator: [ OK ] which is different from the ...
nowox's user avatar
  • 2,849
2 votes
1 answer
612 views

Where does Solaris start sshd?

I'm working on a Solaris 11.3 i86pc machine. Solaris ships an ancient version of OpenSSH and SunSSH, and they can only use RSA. I am trying to update OpenSSH. I built and installed a modern version ...
jww's user avatar
  • 12.1k
2 votes
1 answer
6k views

Will re-installing MySQL remove or delete existing databases?

If I reinstall MySQL, without removing the actual MySQL installation, would it rewrite all files without deleting my databases? My problem is my mysqld is broken, due to the fact that I accidentally ...
NeoVe's user avatar
  • 147
2 votes
2 answers
1k views

Cross-platform daemon/service stop and start

Is there a tool which can control daemons/services in a cross-platform manner? In programming there are different build tools that allow you to build software from source on different platforms; the ...
Anthony's user avatar
  • 167
2 votes
1 answer
15k views

Samba: smbd unrecognized service

Running service smbd restart on a Debian Home server gives me an error reading smbd unrecognized service. The service ran fine after the initial installation, with the abbreviated output being: apt-...
jambolina's user avatar
  • 161
2 votes
1 answer
978 views

Using launchd for persistent scripts

I have launchd configured to run a script. This works fine for the user who installed it (me), but it relaunches the script every time I log in, while I'd like it to run as long as the computer is on (...
Maxim Khesin's user avatar
2 votes
1 answer
675 views

How to daemonize a bash script only if --daemon flag is given?

I have my script.sh and want to run it with ./script.sh or ./script.sh --daemon, having it remain in the foreground unless the --daemon flag is given, in which case it should detach and go into the ...
nullUser's user avatar
  • 733
2 votes
1 answer
1k views

Launchd alternatives

I am writing an application that uses a library that will not work when the application is run as a launchd daemon. There is a bug in the library where it will throw a bus error when used from a ...
Eric Milas's user avatar
2 votes
1 answer
2k views

Send command to daemon

I have a minecraft server running as a daemon. When you run it normally (not as a daemon), you can type commands into the console. How can you get to the console so I can send it commands while it's ...
Jeff's user avatar
  • 21
2 votes
1 answer
3k views

What is the name of the screensaver daemon on Mac OS X?

My Mac's screensaver seems to be frozen, and I think quitting the process through SSH will resolve the problem. Does anyone know what the name of the process is?
waiwai933's user avatar
  • 2,501
2 votes
1 answer
11k views

Installing daemon on a fresh ubuntu system

I have done a linux service using the article on this link http://shahmirj.com/blog/the-initd-script After that I copied the files into the init.d directory cp -f "myserviced" "/usr/sbin/myserviced" ...
Arun Kumar K S's user avatar
2 votes
1 answer
482 views

systemctl (Fedora 17) and interacting spawned processes's consoles

Introduction I've recently upgraded to Fedora 17 and I'm getting used to the newer systemctl daemon manager versus shell init scripts. A feature I need on some of my daemons is the ability to ...
Sean's user avatar
  • 161
2 votes
1 answer
159 views

Run serveral daemon using python

I noticed that serveral daemon invoked python seperately. For example, I have both wicd and ibus daemon running on my machine. Instead of launching a single instance of python, the daemons run with ...
ylc's user avatar
  • 123
2 votes
2 answers
59 views

artsd on a server

On a debian server, I see artsd is running, I don't understand why. It's not my fault. Is there some explication / usage to run a sound daemon on a server ? ~/ ps xf PID TTY STAT TIME ...
Istao's user avatar
  • 155
2 votes
1 answer
4k views

daemons and daemon users (specifically transmission-daemon) on OS X 10.5.8

I'm trying to set up transmission-daemon on a box running Mac OS 10.5.8. I want to do things the right way, which means (to my understanding) create a service user (_transmission, for example) for ...
Just Jake's user avatar
  • 738
2 votes
1 answer
1k views

/var, /var/log on separate partition fails to umount on shutdown, how to debug

As the title says, I have /var and /var/log on separate partitions. On shutdown, I get the error, that umount /var/log, and later umount /var failed. My question is: How to debug this issue? If ...
Zoltan K.'s user avatar
  • 121