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Questions tagged [runlevel]

The term runlevel refers to a mode of operation in one of the computer operating systems that implement Unix System V-style initialization

Conventionally, seven runlevels exist, numbered from zero to six; though up to ten, from zero to nine[citation needed], may be used. S is sometimes used as a synonym for one of the levels. Only one "runlevel" is executed on bootup - run levels are not executed sequentially, i.e. either runlevel 2 OR 3 OR 4 is executed, not 2 then 3 then 4.

"Runlevel" defines the state of the machine after boot. Different runlevels are typically assigned to:

single-user mode
multi-user mode without network services started
multi-user mode with network services started
system shutdown
system reboot
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How do I change the runlevel on systemd?

Pretty simple, I am trying to change the runlevel. Everything I find online points me to the file located in: /etc/init/rc-sysinit.conf Here I have tried changing the "DEFAULT_RUNLEVEL" to 3 or anything else and it makes no difference (the original…
gnomed
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What init 1 command exactly does?

Well to be honest I love finding Loopholes in everything, I was watching a TV Serial Mr Robot and at some point a character mentioned init 1 command, that her computer started crashing again and again and she lost her mind after using that command.…
Ahsan
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How do I setup tty autologin in Ubuntu which is running Upstart

I was trying to find the /etc/inittab where I do my autologin. But in Ubuntu 11.04 that file seems to be lost. Is this the correct way you do it in Ubuntu? # Auto Login for Ubuntu how? # 1. apt-get install mingetty # 2. vim /etc/init/tty1.conf #…
user25165
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How do runlevels work?

I'm replacing an active directory windows server with a linux one. I have to introduce the linux server onto the network, but without AD services (like dhcpd, ldap etc). So I was hoping to create a runlevel that'll allow me to bring the linux…
lapin
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Warning default start runlevel arguments do not match Default-Start values

I tried to add Fuseki as a service to the correct runlevels using update-rc.d. I used sudo update-rc.d fuseki defaults and I think is okay now, but I got this warnings: update-rc.d: warning: default start runlevel arguments (2 3 4 5) do not match…
waanders
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How can I simply change into a text mode runlevel under systemd?

I have got ubuntu 16.04 installed with the systemd. I need to install a cuda toolkit from nvidia, but I can only install it from runlevel 3. Now I have found some answers here, but none of them worked. e.g.: echo "manual" | dd…
sharkant
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What is the difference between single user mode, recovery mode from GRUB, and booting with Ubuntu install disk?

What is the difference between the following: Entering single user mode, e.g. telinit 1 Entering recovery mode, at the GRUB screen selecting Ubuntu ... (recovery mode) Using the Ubuntu installation DVD and entering the command line In what cases…
user779159
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How to set default runlevel?

I would like to know how to set a default runlevel? This is to ensure that my computer directly boots at the set level .
gnsr
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cannot change runlevel from 5 to 3

i'm trying to change from runlevel 5 to runlevel 3 by running sudo init 3 command. for some reason it doesn't do anything anymore. the weird thing is that if i run the command runlevel it shows me that i'm at level 3. tried to run init 5 and then…
idgar
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How can I find the runlevel of the processes of /etc/init.d?

I want to find out in which runlevel the files of /etc/init.d‍ are started. Has someone any idea? I thought there might be the option to find it with the find command
changepicture
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Boot to Runlevel 3

I am running Ubuntu Server, and just installed the gnome desktop on there (I neeeded to run an application that would only work in a graphical interface). However, now the server boots to the GUI every time. I need the server to boot to the command…
Rusty
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Rescue mode (rescue.target) and Emergency mode (emergency.target) descriptions

I can't find descriptions of Rescue mode(rescue.target) and Emergency mode(emergency.target) where it would be stated what's started and what's not in each mode. Some info I find on the web is contradicting each other. Can someone point me to the…
Tomas.R
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Can LIB paths be set in rc.local? Does it execute its commands after we login?

Does rc.local execute its commands after we login? Since rc.local executes its commands after the multi user runlevel completes, does it also mean that we can/should set LIB paths in it instead of setting them in .bashrc?
Aquarius_Girl
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Full Disk Encryption - How to boot in as runlevel 1?

So we have some remote workers who are required to have full disk encryption by policy. Recently I had an issue where someone removed the administrator privileges such that no administrators were left for that machine and we aren't using SSO for…
user447607
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Ensure that a (potentially long) root script execute to completion before power-down

I want to run a simple rsync-based bash script as root when a power-down cycle initiates from either: a login interactive shell, or a gui session, or a machine boot state where no login-user has opened a session (e.g. perhaps a headless server…
Cbhihe
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