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linux时区修改

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当我们生产环境的时区和我们常用开发时时区不一致可能导致我们程序运行时出现异常(当然我们可以单独设置对应的应用的时区,本地特指默认情况),
1,查看时区
方式一:


wakaka@localhost:~$ date -R
Mon, 27 Aug 2018 01:00:45 +0800

这样我们可以确认我们处于+8区
方式二:


wakaka@localhost:~$ cat /etc/timezone 
Asia/Shanghai

2,修改时区
一,首先通过tzselect选择时区。


wakaka@localhost:~$ 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
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
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.
Selected time is now:	2018年 08月 27日 星期一 00:53:07 CST.
Universal Time is now:	2018年 08月 26日 星期日 16:53:07 UTC.
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

二:修改当前用户目录的配置文件.profile,将下面内容放入文件内容尾部,


TZ='Asia/Shanghai'; export TZ

三:刷新配置(source命令/重启系统/重新登陆用户)


source ~/.profile

这样我们就能将当前系统环境的时区设置为我们自己需要的时区时间