Linux设置时区

查看时区

方法1：使用date命令

[root@server ~]# date -R 
Tue, 25 Jul 2023 15:27:56 +0800

方法2：查看clock系统配置文件

[root@server ~]# more /etc/sysconfig/clock 
ZONE="America/Los_Angeles" 
UTC=true 
ARC=false

设置时区

方法1：tzselect

[root@server ~]# 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:      Sun Jan 11 23:31:51 CST 2015.
Universal Time is now:  Sun Jan 11 15:31:51 UTC 2015.
Is the above information OK?
1) Yes
2) No
#? yes
Please enter 1 for Yes, or 2 for 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

注意：tzselect命令只告诉你选择的时区的写法，并不会生效。所以现在它还不是东8区北京时间。你可以在.profile、.bash_profile或者/etc/profile中设置正确的TZ环境变量并导出。 例如在.bash_profile里面设置 TZ=’Asia/Shanghai’; export TZ并使其生效。

[root@server ~]# source .bash_profile
[root@server ~]# date
Sun Jan 11 23:37:40 CST 2015

[root@server ~]# ln /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
ln: failed to create hard link ‘/etc/localtime’: File exists
[root@server ~]#
[root@server ~]#
[root@server ~]# rm /etc/localtime
rm: remove symbolic link ‘/etc/localtime’? y
[root@server ~]#
[root@server ~]# ln /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
[root@server ~]# date -R
Tue, 25 Jul 2023 15:21:33 +0800