【CentOS 7.1】開機運行模式 run level

標籤：centos 7.1 run level initial

在大多數的linux發行版本中，通常有8個 runlevel

Runlevel System State
0 Halt the system
1 Single user mode
2 Basic multi user mode
3 Multi user mode
5 Multi user mode with GUI
6 Reboot the system
S, s Single user mode

可以在檔案 /etc/inittab 中查看

[[email protected] ~]# cat/etc/inittab 

-bash: cat/etc/inittab: 沒有那個檔案或目錄

[[email protected] ~]# cat /etc/inittab 

# inittab is no longer used when using systemd.

#

# ADDING CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.

#

# Ctrl-Alt-Delete is handled by /usr/lib/systemd/system/ctrl-alt-del.target

#

# systemd uses ‘targets‘ instead of runlevels. By default, there are two main targets:

#

# multi-user.target: analogous to runlevel 3

# graphical.target: analogous to runlevel 5

#

# To view current default target, run:

# systemctl get-default

#

# To set a default target, run:

# systemctl set-default TARGET.target

#

// get-default

[[email protected] ~]# systemctl get-default

graphical.target

// set-default

[[email protected] ~]# systemctl set-default multi-user.target

rm ‘/etc/systemd/system/default.target‘

ln -s ‘/usr/lib/systemd/system/multi-user.target‘ ‘/etc/systemd/system/default.target‘

[[email protected] ~]# systemctl get-default

multi-user.target

[[email protected] ~]# 

【CentOS 7.1】開機運行模式 run level