CentOS系统将UTC时间修改为CST时间方法

2018-10-31 07:51

世界协调时间(Universal Time Coordinated,UTC):

GPS 系统中有两种时间区分,一为UTC,另一为LT(地方时)两者的区别为时区不同,UTC就是0时区的时间,地方时为本地时间,如北京为早上八点(东八区),UTC时间就为零点,时间比北京时晚八小时,以此计算即可。

购买了Linux VPS,CentOS系统,发现服务器时间与北京时间往往不一致,存在时差。可以通过运行命令tzselect然后输入选项前面的数字来一步一步地设置当前系统时区。

[linuxidc@localhost linuxidc.com]$ date

2018年 10月 28日 星期日 03:08:23 UTC

可以执行tzselect命令按提示更换时区,依次选择5-Asia,9-China,1-Beijing Time。

[linuxidc@localhost linuxidc.com]$ 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

centos7常见的操作01  UTC  CST-LMLPHP

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

centos7常见的操作01  UTC  CST-LMLPHP

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

#? 1

You can make this change permanent for yourself by appending the line

TZ='Asia/Shanghai'; export TZ

to the file '.profile' in your home directory; then log out and log in again.

Here is that TZ value again, this time on standard output so that you

can use the /usr/bin/tzselect command in shell s:

Asia/Shanghai

centos7常见的操作01  UTC  CST-LMLPHP

1.将TZ='Asia/Shanghai'; export TZ这行添加到/etc/profile(所有用户生效)或者~/.bash_profile(当前用户生效)

2.退出重新登录即可,也可执行source /etc/profile或source ~/.bash_profile立即生效

3.这时候再执行date查看日期就可以发现时区改为北京时间啦。

[linuxidc@localhost www.linuxidc.com]$ date

2018年 10月 28日 星期日 11:26:14 CST

经过以上步骤,我们的CentOS Linux系统时间和计算机硬件时间终于都是CST时间了,并且都是北京时间。

05-11 15:56