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How to use the modification date and time in the Linux system? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Keeping date and time synchronized in Linux system is an important responsibility of every Linux user and system administrator. Many programs rely on accurate time information to work properly. In addition, imprecise dates and times can make timestamps in log files meaningless, weakening their role in system inspection and overhaul. For production systems, accurate dates and times are even more important. For example, in a retail company, all products must be counted accurately at all times (and stored in a database server) so that the financial department can calculate daily and weekly, monthly, and annual expenditure and income.

We must note that there are two types of clocks on Linux machines: a software clock (also known as a system clock) maintained by the kernel and a (battery-powered) hardware clock that records time after the machine is turned off. At startup, the kernel synchronizes the system clock with the hardware clock. After that, the two clocks run independently.

You can also increase or decrease a certain number of days, weeks, months and seconds, minutes, and hours in a relative way. You can also put the date and time parameters in a command.

# date-- set='+5 minutes'# date-- set='-2 weeks'# date-- set='+3 months'# date-- set='-3 months + 2 weeks-5 minutes'

In addition to using one-time ntpdate to synchronize the clock, you can also use the NTP daemon (ntpd), which always runs in the background and constantly adjusts the system clock through NTP.

This is the answer to the question about how to use the modification date and time in the Linux system. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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