Linux下修改时区

1. 首先要确定时区

确定时区需要执行

tzselect


指令

[root@test tmp]# 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

输入完成指令后提示选择大洲。我这里选了4-亚洲。
然后就是选择 国家->市，确认等操作：

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:   Sat Mar 14 22:18:16 CST 2020.
Universal Time is now:  Sat Mar 14 14:18:16 UTC 2020.
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. 配置时区

执行完成选择后并不会直接生效，还需要我们做些操作。根据提示，需要将下面的内容添加到 profile
文件中：

TZ='Asia/Shanghai'; export TZ

执行vim指令打开profile文件：

vim /etc/profile

在 profile
文件尾部追加上面的配置信息。然后执行source指令使配置生效。

source /etc/profile

执行

date


查看时间：

[root@test tmp]# date
Sat Mar 14 22:34:56 CST 2020

可以看到和当前时间是一致的。说明配置已经生效。
End！