shutdown -h now 立即关机shutdown -h +1 或 shutdown -h 11:00一分钟之后关机或11点关机init 0 立刻关机reboot 立刻重启shutdown -r now立即重启shutdown -r +1一分钟后重启init 6立刻重启logout注销推出当前用户窗口exit 注销推出当前用户窗口或control+d