修改CentOS服务器时间为北京时间

1. 购买了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。

[clive@server workspace]$ date
2018年 05月 30日 星期三 02:02:47 UTC


1. 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。

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
#? 1The following information has been given:China
Beijing TimeTherefore TZ='Asia/Shanghai' will be used.
Local time is now:Wed May 30 10:04:16 CST 2018.
Universal Time is now:Wed May 30 02:04:16 UTC 2018.
Is the above information OK?
1) Yes
2) No
#? 1You 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


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。

[clive@server workspace]$ date
2018年 05月 30日 星期三 10:07:11 CST