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
67
questions
2
votes
1answer
50 views
Does Reboot command invoke scripts in /etc/rc0.d/ directory?
I need to kill some services when shutdown/reboot my Linux server, but I am not sure how Reboot command works.
To my understanding, /etc/rc0.d/ scripts will be invoked when system is shutdown, while ...
0
votes
0answers
20 views
Change runlevel and issue on Login and GUI
I changed the default runlevel and reverted to default mode, in level 5 in Ubuntu version 18.04.
When the system boots, instead of the default login page, it shows the old login page and sometimes ...
0
votes
1answer
21 views
how to setup default runlevel to 3 after preseed install ubuntu 16.04
how to setup default runlevel to 3 after preseed install ubuntu 16.04
I install an os ubuntu 16.04 with preseed.cfg
on boot get stuck
boot stuck on /dev/sda1 clean
it seems the same question even ...
1
vote
1answer
26 views
How to prevent systemd from starting services that have RequriedBy on a particular service and/or target
I am trying to write a simple service that just checks if a USB device is connected. Below,is the unit file's content for the service:
cat /etc/systemd/system/check-usb.service
[Unit]
Description=...
2
votes
1answer
87 views
“Asking for cache data failed” and “Assuming drive cache: write through” messages after that Ubuntu boot failed
Today I was using my (old) Compaq laptop where Lubuntu is regularly installed on a partition. Suddenly, it stopped to respond to any inputs, so I (wrongly?) decided to restart the system.
After the ...
0
votes
0answers
44 views
Is it possible to add new runlevel in initd or systemd?
Can I add a new runlevel to initd/systemd?
These are the default runlevels in Slackware:
0 = halt
1 = single user mode
2 = unused (but configured the same as runlevel 3)
3 = multiuser mode (default ...
0
votes
0answers
75 views
Ubuntu 18.04 unable to reinstall apache2 default runlevels link removed by mistake
I recently used sudo update-rc.d -f apache2 remove than I did sudo apt purge apache2 and sudo apt remove apache2. I'm trying to reinstall apache2, but I'm getting this error message:
See "systemctl ...
1
vote
0answers
236 views
why my script in /etc/init.d with K symbolic link in rc0.d and rc6.d and S symbolic link in rc5.d is not working on shutdown?
I'm writing a script which I want to run before every shutdown of my ubuntu system. I have placed my script named myscript inside /etc/init.d folder and then created symbolic links in rc0.d and rc6.d ...
5
votes
1answer
227 views
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
2
votes
1answer
1k views
Can't switch to multi-user.target on Ubuntu 16.04.3 Desktop
Previously on multiple boxes with Ubuntu 16.04 running I've been using
sudo systemctl isolate multi-user.target
to go into CLI from the graphical.target mode. Or I have been using
sudo systemctl ...
0
votes
0answers
119 views
What kind of shell is forked by rc.local scripts
When I try to run a script through rc.local, I see very minimal
environment variables. I am interested to know why this happens. I could not find anywhere the type of shell forked by rc.local.
I even ...
1
vote
1answer
699 views
runlevel is return unknown in teminal
I put in my terminal command:
$ runlevel
and it return me instead some:
init num
just:
unknown
I use Ubuntu 17.10
0
votes
1answer
53 views
Secure way to launch lightdm/xorg/xfree86 from console startup
If I launch Ubuntu in console mode, i.e.:
cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-4.10.0-33-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro text
And then issuing the remaining commands ...
2
votes
1answer
282 views
When are nohup'd processes stopped during shutdown?
When I shutdown Ubuntu after I started a process using nohup, when and how is it getting stopped?
One of the scripts in /etc/rc0.d/ should handle it, shouldn't? Is it S20sendsigs?
2
votes
1answer
111 views
Is the Linux system in one runlevel after bootup or does it go from one runlevel to another during the process of bootup?
Is the Linux system in one runlevel after bootup or does it go from one runlevel to another during the process of bootup?
This means that when we power on the cpu, and the default run level mentioned ...
3
votes
1answer
114 views
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 ...
6
votes
2answers
12k views
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 ...
18
votes
2answers
55k views
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 ...
1
vote
1answer
75 views
Set runlevel… not working out as promised [duplicate]
I'm trying to install a driver for my graphics card in Ubuntu 16.04, and the instructions caution me that first I should set a runlevel that prevents X from starting. That's proving difficult.
The ...
2
votes
0answers
888 views
Execute a Script before shutting down
I'm trying to execute a script before shutdown of a Ubuntu 16.04 machine.
Here is the process I did:
Created a script in /etc/init.d ( touch /etc/init.d/sample )
Given execute permission ( chmod a+x ...
3
votes
1answer
1k views
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 ...
0
votes
0answers
15 views
What happened to runlevel 3 in the latest update? It's not included with runlevel 5 as before [duplicate]
Formerly, when Ubuntu booted up it went right into runlevel 5, which included all of runlevel 3 (networking, multi-terminal screens F1-F6, etc.) but after this latest update I lost my multi-terminal ...
1
vote
1answer
2k views
Set nginx init script to never run automatically on startup
I just installed nginx on Ubuntu 16.04. The trouble is, I only want to start it manually, never automatically on runlevel.
I found lots of entries about how to get it to run on different runlevels, ...
2
votes
1answer
247 views
Ubuntu startup run level
How do I make Ubuntu 12.04 to start at a runlevel other than default 2.although I could change run level after starting from terminal it does not remain when I restart
27
votes
1answer
95k views
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 ...
3
votes
0answers
73 views
Ensure that a (potentially long) root script execute to completion before power-down [duplicate]
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 ...
1
vote
0answers
63 views
What run level activates on reboot, shutdown, and start?
I'm trying to get a better understanding of run levels and things.
I have created two scripts in /etc/ one is called cinit and the other cdinit. The scripts stand for "custom initialize" ...
0
votes
1answer
84 views
runlevel mismatch
i am exploring the runlevel of ubuntu system,
when i run runlevel, to display the current runlevel, i got:
N 5
but inside the /etc/init/rc-sysinit.conf:
env DEFAULT_RUNLEVEL=2
why default ...
8
votes
1answer
10k views
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 ...
1
vote
0answers
592 views
LSB warnings in systemd 15.10
a get warnings by using a disable/enable systemd commands:
$ sudo systemctl enable mongodb.service
Synchronizing state of mongodb.service with SysV init with /lib/systemd/systemd-sysv-install...
...
3
votes
1answer
643 views
no difference between runlevel 3 and 5 in ubuntu 15.04
From the exercises in chapter 3 from Introduction to Linux:
Which services run in graphical mode that don't run in text mode?
So I tried:
diff <(ls -l rc3.d/) <(ls -l rc5.d/)
Ran in the ...
0
votes
1answer
894 views
NetworkManager does not start automatically
I used this QUESTION to configure the default of Ubuntu 14.10 to start in RUNLEVEL 1
but when I switch to another RUNLEVEL (2,3,or 5) , there is no network connection and I have to start the ...
6
votes
1answer
30k views
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 .
1
vote
1answer
338 views
Why am i in run level 2 but i can still see my GUI? [duplicate]
I am a newbie in linux using ubuntu 14.04. I came across the concept of runlevels.
What confuses me is the fact that when i run the command
who -r
I see that i am in runlevel 2 which represents ...
0
votes
1answer
495 views
Runlevel 0 script not running properly on shutdown
I have a basic script where all it does is delete a specific user on shutdown. I made it executable and created a symlink to /etc/rc0.d/K99deleteuser so that it would actually run on shutdown. ...
3
votes
3answers
562 views
Shutdown my system in 30 minutes with telinit
If I want to shutdown my system in 30 minutes with telinit, how could I do it? I know that with shutdown is easier but just for knowing it.
0
votes
0answers
98 views
lubuntu change default runlevel [duplicate]
How can I change the default runlevel in Lubuntu 14.04? Some say by changing the inittab file but, I can't find any /etc/inittab file in my computer.
1
vote
1answer
2k views
Add a grub menu entry that boots into my current install but with a different runlevel
I am running the latest Kubuntu (14.10) and would like to add a grub2 menu entry that allows me to boot straight into a different runlevel? I would like to modify /etc/rc3.d or /etc/rc4.d to boot ...
0
votes
1answer
210 views
When will “runlevel” event be emitted?
start on runlevel [2345]
referring this:
The syntax of start on stanza is:
start on EVENT [[KEY=]VALUE]... [and|or...]
It means, runlevel is en event, [2345] is that event's environment variables'...
1
vote
1answer
578 views
edited rc-sysinit.conf system won't boot [duplicate]
I have modified the DEFAULT_RUNLEVEL from 2 (graphical interface) to 1 in rc-sysinit.conf, to install drivers for GPU. After choosing either default or recovery mode, I see just black screen. Any ...
0
votes
1answer
2k views
Multi-user text mode runlevel in Ubuntu
I use Ubuntu as a server, and I want to change its runlevel to be full multi-user text mode (like init 3 in RedHat).
From this command runlevel i see that am running N 2 which is Graphical multi-...
1
vote
0answers
2k views
April 2014 update taken, bootup hangs at Stopping System V runlevel compatibility
I've seen other threads related to my current situation, but the solutions posted didn't help...
After accepting updates this morning, my system halts at "Stopping System V runlevel compatibility"
...
-1
votes
1answer
248 views
which file in ubuntu defines meaning of each run level?
In redhat based linux, there is a file called inittab in which you can see the meaning and definition of each run level. Is there any file like this in Ubuntu?
I know what each run level means in ...
1
vote
0answers
129 views
Editing/changing runlevels?
I learned linux on redhat/fedora systems, and I really like there runlevels.
The runlevels in ubuntu (inherited from debian i'm sure) are weird, there is no way to get a no GUI environment unless your ...
2
votes
1answer
1k views
What is the order of execution of the scripts at /etc/rc0…6.d/?
The scripts linked at /etc/rc0...6.d/ have numbers at the begining right after the letter S/K, so the question is what is order of execution? From the lower to higher or higher to lower? I also would ...
1
vote
1answer
193 views
Why does the run level change automatically?
I am trying set up a virtual machine as an exercise for my friend, it came to my mind that I can give him a machine that reboots all the time and ask him to find out whats wrong with it. I change run ...
2
votes
1answer
680 views
runlevel misunderstanding
As I known there is no classical init in ubuntu, instead of init ubuntu uses upstart. Upstart is capable of fully simulation of classical init.
The problem is I still don't understand how upstart ...
1
vote
2answers
3k views
run levels only at start up
I find the concept of runlevels very confusing. Currently, I'm trying to run a script only at start up. But configuring as shown below leads to it working also at halt time.
I'm programming a daemon ...
2
votes
1answer
365 views
Reboot ubuntu without a complete hardware reboot
I would like to reboot the OS as if it is pulled up from GRUB, but without actually rebooting the entire computer. This is because this machine has a bunch of different OSes on it and while a reboot ...
0
votes
1answer
398 views
Difference between a 'runlevel' or a 'multiuser runlevel'?
Is there a difference when I say multiuser runlevel and when I say just runlevel ?
