shutdown
安全關機。web
語法：安全
shutdown [OPTION]... TIME [MESSAGE]bash
shutdown -c [MESSAGE]
ide
TIME，分鐘數（整數）spa
選項：blog
-r，重啓get
-h，關閉系統、關閉電源it
-c，撤銷關機操做io
-k，發送關機信息（不關機）ast
例子：
89分鐘後關機；馬上關機
[root@hp430G2 ~]# shutdown -h 89 "Here is a jok." Broadcast message from root@hp430G2 (/dev/pts/0) at 9:35 ... The system is going down for halt in 89 minutes! Here is a jok. [root@hp430G2 ~]# shutdown -h now
先關閉，再取消關機
[root@hp430G2 ~]# shutdown -h 33 "web1 will shutdown in 33 mins." & [1] 2097 [root@hp430G2 ~]# Broadcast message from root@hp430G2 (/dev/pts/0) at 9:39 ... The system is going down for halt in 33 minutes! web1 will shutdown in 33 mins. [root@hp430G2 ~]# shutdown -c shutdown: Shutdown cancelled [1]+ Done shutdown -h 33 "web1 will shutdown in 33 mins." [root@hp430G2 ~]# shutdown -h 33 "web1 will shutdown in 33 mins." & [root@hp430G2 ~]# shutdown -c "shutdown is cancel" shutdown: Shutdown cancelled [1]+ Done shutdown -h 33 "web1 will shutdown in 33 mins." [root@hp430G2 ~]# Broadcast message from root@hp430G2 (/dev/pts/0) at 9:43 ... shutdown is cancel
發送關機消息
[root@hp430G2 ~]# shutdown -k 33 "mail1 will halt." [root@hp430G2 ~]# Broadcast message from root@hp430G2 (/dev/pts/0) at 9:45 ... The system is going down for maintenance in 33 minutes! mail1 will halt.
另一個用戶終端
Broadcast message from root@hp430G2 (/dev/pts/0) at 9:39 ... The system is going down for halt in 33 minutes! web1 will shutdown in 33 mins. Broadcast message from root@hp430G2 (/dev/pts/0) at 9:39 ... The system is going down for halt in 33 minutes! web1 will shutdown in 33 mins. Broadcast message from root@hp430G2 (/dev/pts/0) at 9:42 ... The system is going down for halt in 33 minutes! web1 will shutdown in 33 mins. Broadcast message from root@hp430G2 (/dev/pts/0) at 9:43 ... shutdown is cancel Broadcast message from root@hp430G2 (/dev/pts/0) at 9:45 ... The system is going down for maintenance in 33 minutes! mail1 will halt.
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