一、作用

重启系统

二、选项

  • -w 模拟重启，将过程写入日志
  • -n 直接重启
  • -f 强制重启系统

    三、实例

    ```shell [root@localhost ~]# reboot -w [root@localhost ~]# cat /var/log/messages |tail -20 Jun 15 09:42:13 localhost nm-dispatcher: req:1 ‘dhcp4-change’ [ens38]: start running ordered scripts… Jun 15 09:50:01 localhost systemd: Started Session 50 of user root. Jun 15 09:53:32 localhost dhclient[14778]: DHCPREQUEST on ens38 to 192.168.137.254 port 67 (xid=0x15e82ba3) Jun 15 09:53:32 localhost dhclient[14778]: DHCPACK from 192.168.137.254 (xid=0x15e82ba3) Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2810] dhcp4 (ens38): address 192.168.137.176 Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2812] dhcp4 (ens38): plen 24 (255.255.255.0) Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2812] dhcp4 (ens38): gateway 192.168.137.2 Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2812] dhcp4 (ens38): lease time 1800 Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2813] dhcp4 (ens38): nameserver ‘192.168.137.2’ Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2813] dhcp4 (ens38): domain name ‘localdomain’ Jun 15 09:53:32 localhost NetworkManager[774]: [1655258012.2813] dhcp4 (ens38): state changed bound -> bound Jun 15 09:53:32 localhost dbus[741]: [system] Activating via systemd: service name=’org.freedesktop.nm_dispatcher’ unit=’dbus-org.freedesktop.nm-dispatcher.service’ Jun 15 09:53:32 localhost dhclient[14778]: bound to 192.168.137.176 — renewal in 746 seconds. Jun 15 09:53:32 localhost systemd: Starting Network Manager Script Dispatcher Service… Jun 15 09:53:32 localhost dbus[741]: [system] Successfully activated service ‘org.freedesktop.nm_dispatcher’ Jun 15 09:53:32 localhost systemd: Started Network Manager Script Dispatcher Service. Jun 15 09:53:32 localhost nm-dispatcher: req:1 ‘dhcp4-change’ [ens38]: new request (3 scripts) Jun 15 09:53:32 localhost nm-dispatcher: req:1 ‘dhcp4-change’ [ens38]: start running ordered scripts… Jun 15 10:00:01 localhost systemd: Started Session 51 of user root. Jun 15 10:01:01 localhost systemd: Started Session 52 of user root.

```