1.修改配置文件修改为上海时区 vi /etc/sysconfig/clock
代码语言：javascript复制ZONE="Asia/Shanghai"2.创建上海时区的软连接
代码语言：javascript复制ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime3.重启机器生效
代码语言：javascript复制shutdown -Fr now4.重启后如果时间仍不对，使用date命令调整时间
代码语言：javascript复制--时间调整为2017年6月7号11:29:30
date 060711292017.305.确认硬件时间匹配
代码语言：javascript复制--读取
hwclock -r
--同步
hwclock -w注意： 1）时区一般建议在安装系统时就选择正确，不建议后期更改 2）tzselect可以指导你如何选择正确的时区，但并不会修改时区
tzselect命令示例：
代码语言：javascript复制[root@jyrac1 ~]# 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) east China - Beijing, Guangdong, Shanghai, etc.
2) Heilongjiang (except Mohe), Jilin
3) central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc.
4) most of Tibet & Xinjiang
5) west Tibet & Xinjiang
#? 1
The following information has been given:
China
east China - Beijing, Guangdong, Shanghai, etc.
Therefore TZ='Asia/Shanghai' will be used.
Local time is now: Wed Jun 7 11:33:55 CST 2017.
Universal Time is now: Wed Jun 7 03:33:55 UTC 2017.
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
[root@jyrac1 ~]# 可以看到，最后只是建议你如何设置时区的环境变量。这可以用来单独设置某个用户下的时区。 比如我在oracle用户临时指定了美国纽约的时区(TZ='America/New_York'; export TZ)，时间就会显示美国纽约的时间。
代码语言：javascript复制[oracle@jyrac1 ~]$ date
Wed Jun 7 11:44:35 CST 2017
[oracle@jyrac1 ~]$ TZ='America/New_York'; export TZ
[oracle@jyrac1 ~]$ date
Tue Jun 6 23:44:39 EDT 2017
