Runlevels

Show runlevel

/sbin/runlevel

Systemd

Systemd replaces the startup sequences and runlevels controlled by the traditional init daemon

Runlevels are called targets in systemd

Classic runlevel	Systemd target	Remark
0	poweroff.target
1	rescue.target	Single user
2	multi-user.target	No window manager
3	multi-user.target	No window manager
4	multi-user.target	No window manager
5	graphical.target
6	reboot.target
	default.target
	runlevel0.target	symbolic link to poweroff.target
	runlevel1.target	symbolic link to rescue.target
	runlevel3.target	symbolic link to multi-user.target
	runlevel5.target	symbolic link to graphical.target
	runlevel6.target	symbolic link to reboot.target

Commands

Task	Command	Remark
Show the current runlevel	systemctl list-units --type=target
Change the current runlevel to an other one	systemctl isolate [target name].target
Change the default runlevel on next-boot	ln -sf /usr/lib/systemd/system/[target name].target /etc/systemd/system/[target name].target
Change the default runlevel on next-boot	systemctl set-default [target name].target

cd /lib/systemd/system
ls -l default.target
- lrwxrwxrwx 1 root root 16 Jan 29 18:07 default.target → graphical.target
cp default.target default.target.org
rm default.target
- rm: remove symbolic link 'default.target'?
y
ln -s multi-user.target default.target
*8ll default.target**
1. lrwxrwxrwx 1 root root 17 Feb 29 08:25 default.target → multi-user.target

Useful links

Wikipedia on Runlevels
Linux Standard Base Core Specification 4.1 onrunlevels
Debian on runLevels
Debian on system initialization
Understanding and changing runlevels in systemd

Main subjects on this wiki: Linux, Debian, HTML, Microcontrollers, Privacy

RSS
Disclaimer
Privacy statement
Bugs statement
Cookies
Copyright © : 2014 - 2024 Webevaluation.nl and the authors
Changes reserved.

Webevaluation wiki

Table of Contents

Runlevels

Systemd

Commands

Useful links