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Questions tagged [runlevel]

A run level is the operating state of the operating system. Run levels can be: "halt", "single user mode", "multi-user mode", "reboot", "graphical user interface mode/display manger" and others. Each run level starts or kills a set of processes and is denoted by a number typically from 0 to 6. Different operating systems may define different run levels.

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Ubuntu 18.04 startup questions regarding runlevels and *.wants directories

Is Ubuntu 18.04 using Upstart or systemd? I know with the directories named Rc0.d Rc1.d Rc2.d ......Rc6.d. we can control runlevels in Ubuntu 18.04. But what is the difference between what they do, ...
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Unknown runlevel on Ubuntu 14.04, services not starting on boot

I rent a VPS from a VPS company and run an Ubuntu 14.04 web server there. Recently it had to be suspended by my provider for a while. After the suspension period (1-2 days), the VPS boots, but cannot ...
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Can same level runlevel scripts have the same priority?

Can same level runlevel scripts have the same priority? For instance, can say runlevel x have these 2 scripts: S10ScriptName1 and S10ScriptName2 ? If so, what is the execution order?
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Why does `init 0` result in “Excess Arguments” on Arch install?

I am used to the old method of calling init 0 to shutdown. Bad, I know; but when I tried it on my new Arch install I get this: # init 0 Excess Arguments This confuses me because I thought systemd ...
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Does systemd still know about runlevels?

Does systemd still have the concept of runlevels? For example is it pointless to use telinit <number>?
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Unable to change from graphical target to other systemd targets in Ubuntu

I am currently a newer user of terminal in Ubuntu. I was trying to demonstrate some features of targets in systemd. Each time that I do systemctl enable or systemctl isolate , I enter my credentials, ...
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telinit 1 and run a command there

I need to do some maintenance on a bunch of Debian (Wheezy) systems, and it has to happen at run level 1. But not all machines have a keyboard and a screen; some are even located somewhere else. So I ...
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Windows Subsystem for Linux is unable to determine current runlevel

Issue Many apt-get installs are failing b/c the system can't determine current runlevel Background specs: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: ...
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Change runlevel with systemd [duplicate]

systemd still maintains the general idea of runlevels with its "Targets", but how do I change the system runlevel through systemd? I want to do something equivalent to the old init-script method of: ...
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gdm3 not loading at boot

I am trying to get Symless Synergy version 1.8.8 to autostart when my Ubuntu 18.04 client desktop boots up. I have followed these instructions carefully, but Synergy only starts after logging in. ...
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systemd-logind.service fails to start (when attempting to return from rescue.target to graphical.target). How do I fix it?

I am using Debian 8 ("jessie"). I need to run some services in maintenance mode, So changed from Graphical to rescue mode using , systemctl isolate rescue.target But When I tried to move back to ...
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Rings and run levels

The question stated below might not be technically correct(misconception) so it would be appreciable if misconception is also addressed. Which ring level do the different *nix run levels operate in? ...
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How to associate a script at boot time to a specific run level?

I am trying to understand how run levels work. I understand the meaning of the 7 run levels and I understand that they were usually configured by /etc/inittab, which used to call /etc/init.d/rc, which ...
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472 views

Run skript on shutdown and restart

Based on some posts here, I try to run a simple script to clean up a folder with temporary content on restart and shutdown. Following the instructions and the READMEs I wrote this script: /etc/init....
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4k views

chkconfig --add default runlevel

What is the default runlevel assigned when you run chkconfig --add for a program?
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Telinit command not works

I wasn't aware of the telinit command and I've tried to use it without any good result. Below my command telinit 1 I obtain the following error: timeout opening/witing control channel /dev/initctl ...
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1answer
679 views

Running script at shutdown and reboot to prevent chromium session loss

I'm running Ubuntu 18.04.1 and I'm trying to create a script that shuts down Chromium properly before shutting down the system so that it doesn't give me "restore session" popup after booting. I ...
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Targets and Unit files on Boot System

I have been going through all the docs and examples regarding the targets (referred to as runlevel) for the past few days but I am still confused with the topic. Can anyone explained me the ...
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How to set up a runlevel 3 in Debian 8?

I have installed Debian 8, but I neeed to use just multi-user text mode, runlevel 3, instead of appear my Gnome 3. But I saw that doesn't exist /etc/inittab. And now?
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CentOS - upstart script is created, but its never running at all

I have this following setup but its not working in my CentOS 6x (3.10.23-xxxx-std-ipv6-64 #1 SMP Tue Mar 18 14:48:24 CET 2014 x86_64 x86_64 x86_64 GNU/Linux) Step 1: vi /etc/init/a.conf description "...
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1answer
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Are runlevels 0 and 6 a result or a transition?

The runlevels 0 and 6 have the meaning of shutting down or rebooting the system. If I enter the command init 0, the system will shut down as a result. However my question is if the system is ...
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What differences it will make, if i use “telinit 6” instead of “reboot” command to restart my computer? [duplicate]

I am trying to understand Run Levels in Unix, I found Runlevel 6 is state of reboot. So I tried to switch to run level 6 using the command telinit 6 and it worked same as reboot on my computer. I am ...
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Failed to enable unit: File log.service: No such file or directory

I want to log something before shutdown or poweroff. uname -a Linux xxx 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28) x86_64 GNU/Linux systemctl get-default graphical.target runlevel N 5 To ...
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Run Python script along with OS boot

I'm booting my system with a custom Fedora 27 Workstation live OS which is containing a python script apart from the regular OS files. I want this enable_settings.py scripts to be executed along with ...
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1answer
602 views

Solaris 10 - Is it possible to reboot a system from a startup script?

I have a Solaris 10 test guest logical domain (LDom). I plan to have the network on this be reconfigured before rebooting using a startup script in /etc/rc0.d. At the moment, when the system boots, ...
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Why does Linux Mint starts in runlevel 5 even though DEFAULT_RUNLEVEL is set to 2?

When studying about Linux runlevels I came across something I was unable to explain to myself while trying to change the DEFAULT_RUNLEVEL. When I boot Mint, it starts in runlevel 5, even though it ...
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Adding run levels in ubuntu

I want my postgres service to start at run levels 2,3,4,5 and stop at 0,1,6. So, I ran the following command $ sudo update-rc.d postgresql start 30 2 3 4 5 . stop 30 0 1 6 . When I stop the ...
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How are runlevels from CentOS 6 chkconfig translated for CentOS 7 systemctl?

How would I translate the following command from CentOS 6 to run in CentOS 7? chkconfig --level 345 dovecot on My first guess is to type the following instead: systemctl enable dovecot But ...
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How do you boot Puppy Linux Slacko into the command line?

How do you boot Puppy Linux Slacko (or Precise or Wary) into the command line? I wish to startx only if I need it. Unfortunately it does not seem to copy Slackware's traditional /etc/inittab runlevel ...
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1answer
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How to set the default startup level on ubuntu 16.4

I'm in ubuntu 16.4 /etc/default/grub No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.2 LTS Release: 16.04 Codename: xenial But I cannot find ...
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177 views

What's the difference between SysV and SysV-like systems when changing runlevels?

I am planning to take the LPI exam, and need to know how SysV works. As far as I can tell, a real SysV system is described here: http://www.softpanorama.org/Commercial_linuxes/Startup_and_shutdown/...
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Where is the run level scripts in Manjaro and Arch?

When I use debian-base OS like Ubuntu, Lubuntu or anything else, I can see runlevel scripts in /etc/rc0.d, /etc/rc1.d, /etc/rc*.d folders. But I can't find this folders in Manjaro and arch Linux ...
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Can we enable Networking in single user mode of Linux? [duplicate]

Can we enable Networking in single user mode of Linux ? If Yes then how ?
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15k views

GDM doesn't start - Kali Linux

I've been having this problem since I installed genuine Nvidia GeForce drivers for my graphics card. My system boots normally, but when the login screen should show only black screen shows. The only ...
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root password not working when entering in Single-User Mode

I want to mount the /var directory in a separate device, but I have to move some files from the current /var to a temporary storage, mount /var on the device that I want and then moving the data from ...
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Why is runlevel 0:halt or runlevel6: reboot necessary

Why would you ever need to set the /etc/inittab to RL 0 or 6? Wouldn't you want your system to come back up after the reboot?
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1answer
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What if the initdefault is set to 0 or 6 in RHEL7. How to solve it?

This might look stupid but i need to know. What if the initdefault is set to 0 or 6 in my redhat7 system. How to revert it back. As you can see i'm no expert so please give me a detailed explanation.
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linux run levels: what is impact of running a httpd service on 35 and on 0123456

I know that, run level=0 => Halt/Shuts down system run level=1 => Single-User Mode run level=2 => Multi-User Mode run level=3 => Multi-User Mode with Networking run ...
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Fedora systemctl isolate multi-user.target

Distro : Fedora 24 Virtualisation : VMware pro In a quest to learn about runlevels in Unix/Linux Systems and since i'm using Fedora with systemd , i use the following command to go from level 5 (...
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1answer
256 views

Does Ubuntu run level 2 have network stack configured?

I type the following command in my ubuntu 14.04 VM running on top of virtualbox: $uname -a Linux rex-VirtualBox 4.2.0-42-generic #49~14.04.1-Ubuntu SMP Wed Jun 29 20:22:11 UTC 2016 x86_64 x86_64 ...
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1answer
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How to create a systemd target?

After searching plenty through plenty a post, Youtube video, and "documentation" on the matter of systemd, I'm still at a loss. The link (https://wiki.archlinux.org/index.php/systemd#...
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147 views

Why do init scripts not run multiple times?

I'm trying to understand what goes on when I start up a linux server. My linux server has files /etc/rc2.d/S03cron, /etc/rc3.d/S03cron, /etc/rc4.d/S03cron, /etc/rc5.d/S03cron which should start the ...
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1answer
299 views

How to Recover Debian of LK backports where runlevel conflict?

I did as root in my Debian 8.5 because wanted to test Matlab's thing but the commands removed some dependencies which affect the runlevel Run apt-get purge openjdk-7-jdk openjdk-7-doc openjdk-7-jre-...
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Create and control start up scripts in BusyBox

I have compiled a custom linux kernel in BusyBox. BusyBox init does not support runlevels. When the kernel boots up in BusyBox, it first executes init which looks for the specified runlevel in /etc/...
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SLES12SP1: How to add memcached to the new Services Manager

I installed a new SLES 12 SP1 VM from the scratch with memcached from https://memcached.org/. My question: On SLES 12 the /etc/init.d/<service> notation has gone. It is now provided by the ...
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1answer
135 views

Redhat & GUI/GNOME Struggle?

We have in our Company SysAdmin so damm stupied and lazy. Everytime I ask him for a Redhat Virtual Machine(VM),He just deploy a ready template with GUI and lot of package,a lot I think he just install ...
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Runlevels behaviour when kill script has failed

When I execute sudo init 3, the system executes the kill scripts in /etc/rc.3/ One of those scripts returns a failure (this is expected because the thing it's trying to do won't work). When I then do ...
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How to return either “on” or “off” for: chkconfig --list | grep httpd

To ensure httpd is automatically started on reboot. I simply run this command chkconfig httpd on what I am looking for is a way to be told if this setting is on or off instead of this command ...
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Why is my Debian jessie always in runlevel 5?

I have configured the lines in /etc/inittab as follows: # The default runlevel. id:2:initdefault: But after logging in the output of runlevel is as follows: N 5 So why am I in runlevel 5 instaed ...
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1answer
157 views

Simple manager for systemd

Is there a manager that would run in the console, similar to sysv-rc-conf, that works with the latest systemd under Linux? Ideally it would be able to operate on all runlevels, and be ncurses based.