linux run level

2020-02-15  本文已影响0人  zeloas

linux 启动有个概念就是runlevel,但是很久都不知道runlevel为何物,搜了点资料,总结下

runlevel 定义

0:关机状态
1:单用户模式
2:字符界面的多用户模式(不支持网络)
3:字符界面的多用户模式(运行最完整的模式)
4:未分配使用,系统保留
5:图形界面的多用户模式
6:重新启动系统(reboot)

run level 间切换呢

# systemctl get-default

multi-user.target

# systemctl isolate runlevel5.target

# systemctl isolate graphical.target
# systemctl isolate runlevel3.target

# systemctl isolate multiuser.target
# systemctl set-default runlevel3.target
# systemctl set-default runlevel5.target
# systemctl reboot
# systemctl halt
# systemctl suspend
# systemctl hibernate
# systemctl hybrid-sleep
# systemctl rescue
# systemctl emergency
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