A Linux service is an application (or set of applications) that runs in the background waiting to be used, or carrying out essential tasks.

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How can I restart the SSH daemon on Ubuntu?

When I type in service sshd restart I get a sshd: unrecognized service error. I do have, in /etc/ssh/ a file sshd_config that I use to set config. I can also putty into the Ubuntu box (it is remote). ...
45
votes
10answers
88k views

How to automatically start and shut down VirtualBox machines?

I need to run a software system that is intended to be installed as an appliance on a dedicated machine. In order to save energy, I plan to run the system on a VirtualBox VM instead. The host is a ...
37
votes
3answers
81k views

How do services in Debian work, and how can I manage them?

In Windows I have the services manager, where I see all system services, that can be started through Windows itself, I set up the user it uses, the rights management is in there, and I can pass ...
33
votes
3answers
35k views

Writing basic systemd service files

I am developing a Nodejs application that the user interacts with via HTTP on localhost. There are practically no parameters and the daemon has virtually no dependencies and it just needs to be up by ...
31
votes
3answers
32k views

How to make unix service see environment variables?

I have set my environment variable using /etc/profile: export VAR=/home/userhome Then if I do echo $VAR it shows /home/userhome But when I put reference to this variable into the /etc/init.d/...
29
votes
2answers
99k views

List of available services

Is there any command that would show all the available services in my wheezy Debian based OS? I know that in order to see all the running services you can use service --status-all.
21
votes
4answers
92k views

Keeping a process running after putty or terminal has been closed [duplicate]

I'm running a node.js server off of a raspbian (Debian) machine, and I'd like to start and stop the server remotely. This for me means using putty to access the shell, except when I close out of the ...
12
votes
1answer
5k views

What is the difference between start-stop-daemon and running with &?

I am setting up a service in /etc/init.d. I am looking at various scripts in there, some are implemented with start-stop-daemon ... and some with /path/to/script &. All of them save the pid in a ...
11
votes
3answers
25k views

The rc0.d,rc1.d,… directories in /etc

I'm running Ubuntu where I have the directories /etc/rc0.d, /etc/rc1.d, /etc/rc2.d, ..., /etc/rc6.d. Example files from my machine: directory example symlinks in the dir ------------------------...
10
votes
3answers
7k views

How could we allow non-root users to control a system.d service?

With sysvinit, a sudoers entry like this would suffice: %webteam cms051=/sbin/service httpd * This would allow for commands such as: sudo service httpd status sudo service httpd restart Now, ...
10
votes
7answers
34k views

hostapd will not start via “service” — but will start directly

I am having trouble getting hostapd to start as a service. It fails when I try to start it: $ sudo service hostapd start [FAIL] Starting advanced IEEE 802.11 management: hostapd failed! From what ...
10
votes
2answers
2k views

How do I hide/anonymise/defend a computer when on hostile networks?

I connect to a lot of open networks when I'm pootling around. I'm fairly careful to VPN home for anything important but that's not really my boggle. The laptop runs several services (nfs, dev http ...
9
votes
2answers
16k 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, I'...
9
votes
1answer
48k views

How to list all running daemons?

From my question, it was clear that I cannot easily decide the features of a daemon.I have read in different articles and from different forums that service --status-all command can be used to list ...
8
votes
1answer
11k views

What is meant by “Unknown instance” when restarting a service?

I am trying to get vsftpd file server running on Ubuntu 13.10, I'm unable to connect to the server from another network, although this other network is connected to the server's network and ping is ...
8
votes
1answer
3k views

How to autostart a background program by a non-root user?

As a non-root user, I want to run a background job when the system boots. It's sort of a service which doesn't require root privilege. Is there a way to do it? One way is to put sudo -u user command ...
7
votes
2answers
16k views

Which services can be disabled on Fedora 14?

Following is the output of $chkconfig | grep 5:on on my laptop running Fedora 14. NetworkManager 0:off 1:off 2:on 3:on 4:on 5:on 6:off acpid 0:off 1:off 2:on 3:on ...
7
votes
3answers
17k views

How to start a script file on boot?

I am running a stupid little minecraft server. I want Lubuntu to execute the following script when the server boots up. NOT on login, and NOT on restart (unless it's starting up of course). The ...
7
votes
2answers
946 views

What is brandbot?

What is the "brandbot" service running in Centos 7? What does it do? All I can find (it has no manpage) is "Flexible Branding Service" and that it's part of the "base" repo.
7
votes
3answers
18k views

What is the recommended way of checking running services?

I'm often exposed to various GNU/Linux systems including CentOS, SLES and Debian. I want to know: what is the recommended method of checking all running services across these systems? I am aware of ...
7
votes
2answers
5k views

Starting a service during startup

I've created a service for an application, and I want this application to be started on boot. In the service manifest, I realize that there's a property for this (enabled="true"), but I've been ...
6
votes
1answer
546 views

What is wrong with this shell script?

The service for a piece of software I just installed (from a provided .deb file) on a Ubuntu server won't start. When running the service I get the error: /etc/init.d/matrixsa: 44: Syntax error: "}" ...
6
votes
1answer
4k views

What is the alternative or equivalent to Windows services on Gnu/Linux?

I was wondering what is the alternative or equivalent to Windows services on Gnu/Linux. Is it a sever like X or Pulseaudio but that wouldn't make any sense because the theme service on windows, a ...
6
votes
3answers
7k views

Difference between /etc/init.d/networking restart and invoke-rc.d networking restart

Is there any real difference between /etc/init.d/networking restart and invoke-rc.d networking restart (Debian)?
6
votes
2answers
369 views

Is there an ICMP echo request service?

Often, in applications that I develop, I like to include a network status indicator for various devices on the network. The easiest way to monitor these devices is by pinging them. But ICMP echoes are ...
5
votes
1answer
1k views

Why doesn't my systemd user unit start at boot?

I'm trying to create a systemd user unit and have it start when the system boots. The service does start manually, however it does not start at boot. From searching the Internet I learned that in ...
5
votes
1answer
184 views

“service {FOO} start” vs. “/etc/init.d/{FOO} start”? [closed]

I use CrashPlan on my Debian 8 desktop. I have a script where I must stop the CrashPlan service at the beginning and then start it before exiting. I was using /etc/init.d/crashplan start for the ...
5
votes
1answer
3k views

Should “invoke-rc.d” or “service” be used to restart services?

I'm confused as to which is best and in which circumstances: invoke-rc.d apache2 restart or service apache2 restart Is there a real difference? man service has the following interesting bit: ...
5
votes
2answers
6k 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?
5
votes
1answer
278 views

Monitor a process in Debian

I want to create a service that monitors the existence of a certain process. I wrote the following shell script: #!/bin/sh while : do w=`ps u -A | grep -P ".+Sl.+/usr/local/MySource/endpoint" -c` ...
5
votes
1answer
11k views

nmap shows me that one service is “open|filtered” while locally it's “open”, how to open?

I have a Quake 3 server. And it's launched successfully. The problem is that no one can connect to that server. I am running: nmap -sU -p 27960 hostname and it's showing me that it's state open|...
5
votes
1answer
2k views

Can I use a symbolic link as a service of systemd?

For instance, I have a service named mysshd.service under /usr/lib/systemd/system/ directory. Can I create a symbolic link such as: ln -s /usr/lib/systemd/system/mysshd.service /usr/lib/systemd/...
5
votes
2answers
439 views

Why is a service being started if it isn't mentioned in /etc/init.d?

After a clean install of Fedora 17 and distcc-server, I did a service distccd start, which completed successfully. man service indicates that it would merely be running the distccd script at /etc/...
5
votes
1answer
924 views

Transmission-daemon service spontaneously stops

I've installed, configured and ran transmission-daemon on my CentOS 6 machine using service transmission-daemon start This works nicely, and I can see the web interface on http://server.ip:9091 as ...
5
votes
1answer
249 views

Lightdm service - contradictory results for `status` command

When I run in my gnome-terminal: service lightdm status everything looks OK and it is as expected: lightdm start/running, process 1221 But when I run: service --status-all 2>&1 | grep ...
5
votes
1answer
4k views

MySQL stop/waiting issues; “can't connect … through socket” [duplicate]

So this was my first time putting up a LAMP stack on a Bodhi machine (previously experience with WAMP, and LAMP on 10.04); I got Apache going, and a Drupal install begun, then I go to create a new ...
4
votes
4answers
315 views

Does a service restart send a HUP?

I have noticed that doing a service restart with something like: service sshd restart is very similar to doing something like: pkill -HUP sshd However the pkill would close my ssh session where ...
4
votes
1answer
5k views

What code runs when I type “sudo service nginx start”

I am having this problem: http://stackoverflow.com/questions/10939072/add-nginx-as-a-ubuntu-service-stop-and-reload-doesnt-work I am trying to understand if my code to start nginx is point to the ...
4
votes
2answers
1k views

Run script every 30 min with systemd

I would like to execute a script every 30 min after booting into the system. I know you can use cron, but I don't plan to use this feature often therefore I'd like to try it with systemd. So far I ...
4
votes
1answer
19k views

NFS Server changes in /etc/exports file need Service Restart?

I have NFSv4 Server (on RHELv6.4) and NFS Clients on (CentOSv6.4). Let's say in /etc/exports: /shares/website1 <ip-client-1>(rw,sync,no_subtree_check,no_root_squash) /shares/website2 &...
4
votes
1answer
3k views

start-stop-daemon makes cron pidfile with wrong pid

I have an init.d script to start crond which specifies the following for start(): start-stop-daemon -S --quiet --make-pidfile --pidfile /var/run/crond.pid --background --exec /usr/sbin/crond However,...
4
votes
3answers
2k views

linux launch script /etc/init with a specific user

I've created a script in /etc/init/mms-agent.conf : start on runlevel [2345] stop on runlevel [06] exec /usr/bin/env python /home/mms/mms-agent/agent.py >> /home/mms/agent.log 2>&1 ...
4
votes
2answers
3k views

Ubuntu full list of available services

This question is very similar to this one: List of available services For my specific case, I'm wondering if there is a specific command to show the full list of services under Ubuntu. I did run a ...
4
votes
1answer
5k 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 sudo)...
4
votes
3answers
520 views

systemd service that needs .ssh/id_dsa password

I have a systemctl service that starts a process smd-loop in a screen session. This process requires acces to remote SSH sources (for syncing purposes) and thus needs to be able to access my id_dsa ...
4
votes
1answer
2k views

Start network service at boot time on CentOS

I've recently reinstalled CentOS onto a computer of mine. I have OpenSSH Server on it now, as did I before I reinstalled the operating system. Here's the difference: Before, SSH started without even ...
4
votes
1answer
1k views

How do systemd and chkconfig interact with respect to services and runlevels?

I recently updated some of our machines to Fedora 17. I have noticed that there are some services that I can configure their runlevels using chkconfig, while others don't appear there at all, and can ...
4
votes
1answer
103 views

When is the appropriate time to start Redshift using upstart?

I have been trying to get Redshift to start before login so that the bright welcome screen does not blind me, in particular when switching users. Running Redshift as a service does not seem fully ...
4
votes
1answer
2k views

Systemd service wanted by multiple targets

Is there a way to make a service wanted by multiple targets (or to have multiple install directives) so that when installed a symbolic link is created in all places. My example is the following ...
4
votes
1answer
647 views

Init-systems and service management on different distributions

Is there some overview which Linux distribution comes with which (default) init system and uses which tool for starting/stopping services? Is there some distribution independent way to start/stop/...