linux查看及修改时区的方法

1.查看系统时区:
方法1:
[root@mytest2 ~]# date -R
Sun, 07 Sep 2014 23:10:23 -0400
方法2:
[root@mytest2 ~]# cat /etc/sysconfig/clock
# The ZONE parameter is only evaluated by system-config-date.
# The timezone of the system is defined by the contents of /etc/localtime.
ZONE="America/New_York"
UTC=true
ARC=false

2.修改系统时区:
方法1:使用tzselect

[root@mytest2 ~]# 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: Mon Sep 8 11:19:54 CST 2014.
Universal Time is now: Mon Sep 8 03:19:54 UTC 2014.
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@mytest2 ~]#

方法2:使用timeconfig(仅限于RedHat Linux和CentOS)

方法3:复制相应的时区文件，替换系统时区文件；或者创建链接文件
cp /usr/share/zoneinfo/$主时区/$次时区 /etc/localtime

例如：在设置中国时区使用亚洲/上海（+8）
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

修改/etc/sysconfig/clock为相应的配置:
[root@mytest2 Asia]# cat /etc/sysconfig/clock
# The ZONE parameter is only evaluated by system-config-date.
# The timezone of the system is defined by the contents of /etc/localtime.
ZONE="Asia/Shanghai"
UTC=true
ARC=false
3.将修改后的信息写入hwclock.
hwclock -w
4.验证:
hwclock
date -R

本文出自 “webseven” 博客，请务必保留此出处http://webseven.blog.51cto.com/4388012/1549885