Linux时区修改 TIMEZONE TZ Asia/Shanghai

系统+安全 Liemer_Lius 336℃

1、tzselect命令

交互式选择的方式,来选择时区,但试验实际操作中,并未立即生效,重启也无效。

# 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:	Wed May 19 11:23:12 CST 2021.
Universal Time is now:	Wed May 19 03:23:12 UTC 2021.
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 scripts:
Asia/Shanghai

2、替换/etc/localtime的软链接指向

这个实际测试是立即生效的。

# date
Tue May 18 23:27:48 EDT 2021
# ls -l /etc/localtime
lrwxrwxrwx. 1 root root 38 Apr 29 07:37 /etc/localtime -> ../usr/share/zoneinfo/America/New_York
# ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
ln: failed to create symbolic link ‘/etc/localtime’: File exists
# ln -s -f /usr/share/zoneinfo/Asia/Shanghai /etc/localtime  # -f强制
# date
Wed May 19 11:28:09 CST 2021

3、增加TZ变量

# vim /etc/profile
export TZ='Asia/Shanghai'  # source或者重新登录shell生效

 

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