Linux operating system and time synchronization settings

For linux operating systems and time synchronization settings, note the following command prerequisites: run the root permission to set the time: www.2cto. comdate-s11: 25: 36 set date: date-s07/26/2005 force write system time to CMOS (otherwise the system will set the time after 11 minutes by default...
For linux operating systems and time synchronization settings, note the following command prerequisites: run the root permission to set the time: www.2cto.com date-s 11:25:36: date-s 07/26/2005 forcibly write the system time to CMOS (otherwise, the system will write the set time to the motherboard CMOS in 11 minutes by default): clock-w www.2cto.com synchronize from the time server: ntpdate xxx -- "xxx" is a synchronization server domain name or IP address modification scheduler task. type the command crontab-e to modify the scheduler task configuration file and add the following command: 0 3 ***/usr/sbin/ntpdate 172.1.1.1>/var/log/ntpdate. log 2> & 1 the preceding command allows the time synchronization command to be executed at every day. at the same time, the execution result of the synchronization command is written and saved to "/var/log/ntpdate. note in the log file: the ntpdate command must be in the full path, Otherwise, the command cannot be found. You do not need to enter the full path during command line execution.