CentOS system changes UTC time to CST time method
Universal Time Coordinated (UTC):
There are two time distinctions in the GPS system. One is UTC and the other is LT (local time). The difference between the two is the time zone. UTC is the time in time zone 0, and the local time is the local time. For example, Beijing is eight o'clock in the morning (East). Eight districts), UTC time is zero, and the time is eight hours later than Beijing time, just use this calculation.
date
Sunday, January 26, 2021 03:08:23 UTC
You can execute the tzselect command to change the time zone as prompted, and select 5-Asia, 9-China, 1-Beijing Time in turn.
tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
1) Africa
2) Americas
3) Antarctica
4) Arctic Ocean
5) Asia
6) Atlantic Ocean
7) Australia
8) Europe
9) Indian Ocean
10) Pacific Ocean
11) none - I want to specify the time zone using the Posix TZ format.
#? 5
Please select a country.
1) Afghanistan 18) Israel 35) Palestine
2) Armenia 19) Japan 36) Philippines
3) Azerbaijan 20) Jordan 37) Qatar
4) Bahrain 21) Kazakhstan 38) Russia
5) Bangladesh 22) Korea (North) 39) Saudi Arabia
6) Bhutan 23) Korea (South) 40) Singapore
7) Brunei 24) Kuwait 41) Sri Lanka
8) Cambodia 25) Kyrgyzstan 42) Syria
9) China 26) Laos 43) Taiwan
10) Cyprus 27) Lebanon 44) Tajikistan
11) East Timor 28) Macau 45) Thailand
12) Georgia 29) Malaysia 46) Turkmenistan
13) Hong Kong 30) Mongolia 47) United Arab Emirates
14) India 31) Myanmar (Burma) 48) Uzbekistan
15) Indonesia 32) Nepal 49) Vietnam
16) Iran 33) Oman 50) Yemen
17) Iraq 34) Pakistan
#? 9
Please select one of the following time zone regions.
1) Beijing Time
2) Xinjiang Time
#? 1
The following information has been given:
China
Beijing Time
Therefore TZ='Asia/Shanghai' will be used.
Local time is now: Sun Oct 28 11:12:54 CST 2018.
Universal Time is now: Sun Oct 28 03:12:54 UTC 2018.
Is the above information OK?
1) Yes
2) No
#? 1Permanently modify the time
1. will
TZ='Asia/Shanghai'
export TZAdd to /etc/profile (valid for all users) or ~/.bash_profile (valid for current users)
2. Just log out and log in again, or execute source /etc/profile or source ~/.bash_profile to take effect immediately
3. At this time, execute date to check the date and you can find that the time zone is changed to Beijing time.
date
2021年 1月 26日 星期日 11:26:14 CSTAfter the above steps, our CentOS Linux system time and computer hardware time are finally CST time, and both are Beijing time.
