linux synchronization time command

You can use the ntpdate command. The ntpdate command sets the date and time using Network Time Protocol (NTP), setting the local date and time by polling a specified NTP server that determines the correct time. It obtains a number of samples from each server specified and applies standard NTP clock filters and selection algorithms to select the best samples.

Command format: ntpdate time server.

1. Install ntpdate and execute the following command

yum install ntpdate -y

2. Manually synchronize network time

ntpdate command:

ntpdate -u 210.72.145.44: Network Time synchronization command

Note: If the -u parameter is not added, the following prompt will appear: no server suitable for synchronization found

-u: It can be seen from man ntpdate that the -u parameter can Synchronize with the host across the firewall;

210.72.145.44: The official server of China National Time Service Center.

NTP commonly used server:

China National Time Service Center: 210.72.145.44

NTP server (Shanghai): ntp.api.bz

United States: time .nist.gov

Fudan: ntp.fudan.edu.cn

Microsoft Corporation Time Service Host (USA): time.windows.com

Taiwan Police University Time Service Center ( Taiwan): asia.pool.ntp.org

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