Linux Update system time

First, the system time

1. Viewing the system time

[Email protected] ~]# datetue Dec  5 16:06:18 CST 2017

2. Set the system time

[[email protected] ~]# date-s 2017/12/5[[email protected] ~]# date-s 16:03:30

Second, hardware time

1. View Hardware time

[Email protected] ~]# clock--showtue 04:08:17 PM CST  -0.881128 seconds[[email protected] ~]# hwclock--s Howtue 04:08:23 PM CST  -0.114663 seconds

2. Set Hardware time

[Email protected] ~]# hwclock--set--date= "12/05/17 16:11" [[email protected] ~]# clock--set--date= "12/05/17 16:11"

Three, synchronization system and hardware time

Clock--SYSTOHC,HC represents the hardware time, SYS represents the system time, meaning to use the system time to synchronize hardware time;

Clock--hctosys, meaning to use hardware time to synchronize the system time.

[[email protected] ~]# clock--systohc[[email protected] ~]# clock--hctosys
[Email protected] ~]# clock--show
[[Email protected] ~]# Date

Linux Update system time