linux下正常关机命令有哪些

2023-04-13 20:44:00 命令 关机 有哪些

Linux下正常关机命令有哪些?

一般来说,Linux下关机命令有两种:一种是正常关机命令,另一种是强制关机命令。

正常关机命令是指让系统完成正常的关机过程,系统会自动执行一系列操作,包括卸载系统内核、关闭系统服务、关闭系统进程等,最后将系统关闭。

强制关机命令是指不管系统是否完成了正常的关机过程,直接将系统关闭。

下面介绍一下Linux下常用的正常关机命令:

1. shutdown命令

shutdown命令是一个用于关闭或重启系统的命令,它可以设置系统在指定时间后自动关机或重启。

语法:

shutdown [选项]... 时间 [警告信息]

选项:

-h:关机

-r:重启

-c:取消正在进行的关机或重启操作

时间:

关机或重启的时间,可以使用以下格式:

now:立即执行

+m:m分钟后执行

+h:h小时后执行

+d:d天后执行

警告信息:

系统在执行关机或重启操作前给出的警告信息。

使用方法:

1)立即执行关机操作

命令:

sudo shutdown -h now

输出:

Broadcast message from root@ubuntu (/dev/pts/0) at 16:31:33 ...

The system is going down for halt NOW!

Connection to 192.168.1.100 closed by remote host.

Connection to 192.168.1.100 closed.

2)设置5分钟后执行关机操作

命令:

sudo shutdown -h +5

输出:

Broadcast message from root@ubuntu (/dev/pts/0) at 16:32:07 ...

The system is going down for halt in 5 minutes!

Connection to 192.168.1.100 closed by remote host.

Connection to 192.168.1.100 closed.

3)设置10小时后执行重启操作

命令:

sudo shutdown -r +10

输出:

Broadcast message from root@ubuntu (/dev/pts/0) at 16:32:37 ...

The system is going down for reboot in 10 hours!

Connection to 192.168.1.100 closed by remote host.

Connection to 192.168.1.100 closed.

2. poweroff命令

poweroff命令是一个用于关闭系统的命令,它可以设置系统在指定时间后自动关机。

语法:

poweroff [选项]... [警告信息]

选项:

-h:关机

-r:重启

-c:取消正在进行的关机或重启操作

警告信息:

系统在执行关机或重启操作前给出的警告信息。

使用方法:

1)立即执行关机操作

命令:

sudo poweroff

输出:

Broadcast message from root@ubuntu (/dev/pts/0) at 16:33:46 ...

The system is going down for halt NOW!

Connection to 192.168.1.100 closed by remote host.

Connection to 192.168.1.100 closed.

2)设置5分钟后执行关机操作

命令:

sudo poweroff -h +5

输出:

Broadcast message from root@ubuntu (/dev/pts/0) at 16:34:16 ...

The system is going down for halt in 5 minutes!

Connection to 192.168.1.100 closed by remote host.

Connection to 192.168.1.100 closed.

3)设置10小时后执行重启操作

命令:

sudo poweroff -r +10

输出:

Broadcast message from root@ubuntu (/dev/pts/0) at 16:34:46 ...

The system is going down for reboot in 10 hours!

Connection to 192.168.1.100 closed by remote host.

Connection to 192.168.1.100 closed.

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