Ubuntu 18.04 修改中国时区

01 打开Ubuntu的时区选择工具

tzselect 

或者

sudo tzselect 

02 选择地理信息

选择你在哪个洲、哪个国家、然后根据国家选则时区,中国有北京时间和新疆时间,选择北京时间 。下面的代码块是 bash 的 Log 信息,注意看 有中文注释的部分

chengsixgold@ubuntu:~$ tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent, ocean, "coord", or "TZ".
 1) Africa
 2) Americas
 3) Antarctica
 4) Asia
 5) Atlantic Ocean
 6) Australia
 7) Europe
 8) Indian Ocean
 9) Pacific Ocean
10) coord - I want to use geographical coordinates.
11) TZ - I want to specify the time zone using the Posix TZ format.
#? 4  // 第一个输入项,选择4 Asia为亚洲
Please select a country whose clocks agree with yours.
 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 // 第二个输入项,选择9 China为中国
Please select one of the following time zone regions.
1) Beijing Time
2) Xinjiang Time
#? 1 // 第三个输入项,选择1 Beijing Time为北京时间

The following information has been given:

	China
	Beijing Time

Therefore TZ='Asia/Shanghai' will be used.
Selected time is now:	2018年 07月 14日 星期六 15:06:33 CST.
Universal Time is now:	2018年 07月 14日 星期六 07:06:33 UTC.
Is the above information OK?
1) Yes
2) No
#? Yes
Please enter a number in range.
#? 1 // 第四个输入项,选择1 确定要修改时区

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 scripts:
Asia/Shanghai

让时区修改生效

sudo ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime