#shutdown命令: System shutdown, restart, etc.
shutdown [Options] ... Time
Time:now (immediately) +# (after how many minutes) hh:mm (a few moments)
The system shuts down after five minutes:
[[Email Protected]_168_102_centos ~]# shutdown 5//System restarts after 5 minutes broadcast message from [email protected]_168_102_centos (/dev /pts/0) at 16:19 ... The system is going down for maintenance in 5 minutes!//countdown ^cshutdown:shutdown cancelled//catrl+c Cancel operation
The system will turn off at 15:15:
[[Email Protected]_168_102_centos ~]# shutdown 15:15//15 Point 15 points system shutdown broadcast message from [email protected]_168_102_ CentOS (/dev/pts/0) at 16:22 ... The system is going down for maintenance in 1373 minutes!//Countdown ^cshutdown:shutdown cancelled
Shutdown–r: Restart
The system will restart after 10 minutes:
[[Email Protected]_168_102_centos ~]# shutdown-r 10//10 minutes after restart broadcast message from [email Protected]_168_102_centos (/ dev/pts/0) at 16:25 ... The system is going down for reboot in minutes!//Countdown ^cshutdown:shutdown cancelled
Shutdown-h (Halt): Power off
The system shuts down after five minutes:
[[Email Protected]_168_102_centos ~]# shutdown-h 10//10 minutes after shutdown broadcast message from [email Protected]_168_102_centos (/ dev/pts/0) at 16:37 ... The system is going down for halt in minutes!//Countdown ^cshutdown:shutdown cancelled
Power off after shutdown
Halt: Actually halt is called shutdown-h. When the halt executes, the application process is killed, the sync system is called, and the kernel is stopped after the file system write operation is complete.
#data命令: The date and time that can be used to display or set the system
View current date and time:
#date
[[Email Protected]_168_102_centos ~]# datesun 3 16:58:22 CST 2014
View current Date:
#date +%d
[Email protected]_168_102_centos ~]# Date +%d 08/03/14 //August 3, 14
#date +%F
[Email protected]_168_102_centos ~]# Date +%f2014-08-03//August 3, 2014
View Current year:
#date +%y
[[Email protected]_168_102_centos ~]# Date +%y2014 //show four-bit year
#date +%y
[[Email protected]_168_102_centos ~]# Date +%y14 //show two-bit year
View Current Month
#date +%m
[Email protected]_168_102_centos ~]# Date +%m08
View current date
#date +%d
[Email protected]_168_102_centos ~]# Date +%d03
See when the current moment is a few seconds
# date +%h%m%s
[[Email protected]_168_102_centos ~]# Date +%h%m%s173953 //17 points 39 minutes 53 seconds
View current month day minute seconds ( date time can be custom interval symbol )
#date +%y%m%d%h%m%s
[[Email protected]_168_102_centos ~]# Date +%y%m%d%h%m%s20140803174148 //August 3, 2014 17:41 48 sec
#date +%y-%m-%d%h-%m:%s
[Email protected]_168_102_centos ~]# Date +%y-%m-%d-%h:%m:%s2014-08-03-17:46:53//display mode
#date +%y/%m/%d/%h:%m:%s
[Email protected]_168_102_centos ~]# Date +%y/%m/%d/%h:%m:%s2014/08/03/17:48:52 //display mode
Modify the current date
#date –s-month-day (2014-08-03)
[Email protected]_168_102_centos ~]# date +%f2014-08-02[[email protected]_168_102_centos ~]# date-s 2014-08-03Sun Aug< C3/>3 00:00:00 CST 2014[[email protected]_168_102_centos ~]# Date +%f2014-08-03
Modify the current time
#date –s: minutes: seconds (17:55:00)
[[Email Protected]_168_102_centos ~]# datesun 3 18:55:06 CST 2014[[email protected]_168_102_centos ~]# date-s 17: 55:00sun 3 17:55:00 CST 2014
Modify the current date and time
[Email protected]_168_102_centos ~]# date +%y-%m-%d-%h:%m:%s2013-07-02-14:56:03[[email Protected]_168_102_centos ~] # date-s "2014-08-03 17:59:57" Sun 3 17:59:57 CST 2014[[email protected]_168_102_centos ~]# Date +%y-%m-%d-%h:%m:% s2014-08-03-17:59:59
Date and time are modified together Shuga "year-month-day time: minutes: Seconds", date and time with an empty interval