In linux, set the date-general Linux technology-Linux technology and application information. The following is a detailed description. We generally use the "date-s" command to modify the system time. For example, the command to set the system time to June 10, 1996 is as follows.
# Data-s 06/10/96
The command to set the system time to 01:12:00 P.M. is as follows.
# Date-s 13:12:00
Note that the system time is maintained by the operating system in linux.
When the system is started, the Linux operating system reads the time from CMOS to the system time variable. Later, the modification time is implemented by modifying the system time. To maintain the consistency between the system time and the CMOS time, Linux writes the system time to the CMOS at intervals. Because the synchronization is performed at intervals (about 11 minutes), after we execute date-s, if the machine is restarted immediately, the modification time may not be written to CMOS, this is the cause of the problem. To make sure the modification takes effect, run the following command.
# Clock-w
This command forces the system time to be written into CMOS.
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