Linux命令学习总结：reboot命令
命令简介：
该命令⽤来重启Linux系统。相当于Windows系统中的restart命令。
命令语法：
/sbin/reboot [-n] [-w] [-d] [-f] [-i]或
reboot [-n] [-w] [-d] [-f] [-i]
命令参数：
参数-d-f-h-i-n-p-w
长参数
描叙
重新启动时不把数据写⼊记录⽂件/var/tmp/wtmp强制重新开机，不调⽤shutdown指令的功能。
在系统关机或poweroff之前，将所有的硬盘处于待机模式关闭⽹络设置之后再重新启动系统保存数据后再重新启动系统
When halting the system, do a poweroff. This is the default when halt is called as poweroff仅做测试，并不真的将系统重新开机，只会把重开机的数据写⼊/var/log⽬录下的wtmp记录⽂件
显⽰命令在线帮助
--help
使⽤⽰例：
1: 查看reboot命令的帮助信息
[root@DB-Server ~]# reboot --helpusage: reboot [-n] [-w] [-d] [-f] [-h] [-i]
-n: don't sync before halting the system
-w: only write a wtmp reboot record and exit. -d: don't write a wtmp record.
-f: force halt/reboot, don't call shutdown. -h: put harddisks in standby mode. -i: shut down all network interfaces.[root@DB-Server ~]# man reboot
[root@DB-Server ~]# man rebootHALT(8) Linux System Administrator鈥檚 Manual HALT(8) NAME halt, reboot, poweroff - stop the system. SYNOPSIS /sbin/halt [-n] [-w] [-d] [-f] [-i] [-p] [-h] /sbin/reboot [-n] [-w] [-d] [-f] [-i] /sbin/poweroff [-n] [-w] [-d] [-f] [-i] [-h] DESCRIPTION Halt notes that the system is being brought down in the file /var/log/wtmp, and then either tells the kernel to halt, reboot or poweroff the system. If halt or reboot is called when the system is not in runlevel 0 or 6, in other words when it鈥檚 running normally, shutdown will be invoked inste the -h or -r flag). For more info see the shutdown(8) manpage. ：强制重新开机，不调⽤shutdown指令的功能 2 The rest of this manpage describes the behaviour in runlevels 0 and 6, that is when the systems shutdown scripts are being run. OPTIONS -n Don鈥檛 sync before reboot or halt. Note that the kernel and storage drivers may still sync.[root@DB-Server ~]# reboot -f -w Don鈥檛 actually reboot or halt but only write the wtmp record (in the /var/log/wtmp file).
3：关闭⽹络设置之后再重新启动系统
[root@DB-Server ~]# reboot -i
Broadcast message from root (pts/1) (Mon Jul 28 11:31:28 2014):
The system is going down for reboot NOW!
4：保存数据后再重新启动系统
[root@DB-Server ~]# reboot -n
Broadcast message from root (pts/1) (Mon Jul 28 11:33:57 2014):
The system is going down for reboot NOW!
5：重新启动时不把数据写⼊记录⽂件/var/tmp/wtmp
[root@DB-Server ~]# reboot -d
Broadcast message from root (pts/2) (Mon Jul 28 11:23:26 2014):
The system is going down for reboot NOW!
