linux modify the system time synchronized network time

A, date command

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date -s time changes to the system time clock time

Set the time and date

For example: the command system date set to June 8, 2018 in

命令 ： "date -s 06/08/2018"

The system time is set to 22:46:03 commands

命令 ： "date -s 10:46:03"

Two, hwclock command

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hwclock / clock view, set the hardware time

View the system hardware clock

Set hardware time

 hwclock --set --date = "06/18/14 14:55" (month / day / year hours: minutes: seconds) or # clock --set --date = "06/18/14 14:55" (month / day / year hours: minutes: seconds)

Server Time Set

ntpdate time.nuri.net (if there are other time.nuri.net can not be used), such as:

time.nist.gov

0.asia.pool.ntp.org

1.asia.pool.ntp.org

2.asia.pool.ntp.org

3.asia.pool.ntp.org

Network time synchronization

Hardware clock and system clock synchronization:

# Hwclock --hctosys or # clock --hctosys hc represent hardware time, sys represents the system time, i.e., hardware clock synchronization with the system clock

System clock and the hardware clock synchronization:

# Hwclock --systohc or # clock --systohc i.e. hardware clock synchronized with the system clock