最近折腾手机上安装Ubuntu，发现显示的时间不对，可惜当前的 Date and Time菜单中没法进行时间设置，而且其显示的为London地区的时间，故通过命令行修改之；
1、确定所在时区的编号
可以通过tzselect命令实现：
phablet@localhost:~$ tzselect Please identify a location so that time zone rules can be set correctly. Please select a continent or ocean.1) Africa2) Americas3) Antarctica4) Arctic Ocean5) Asia6) Atlantic Ocean7) Australia8) Europe9) 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) Palestine2) Armenia 19) Japan 36) Philippines3) Azerbaijan 20) Jordan 37) Qatar4) Bahrain 21) Kazakhstan 38) Russia5) Bangladesh 22) Korea (North) 39) Saudi Arabia6) Bhutan 23) Korea (South) 40) Singapore7) Brunei 24) Kuwait 41) Sri Lanka8) Cambodia 25) Kyrgyzstan 42) Syria9) 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 #? 1The following information has been given:Chinaeast China - Beijing, Guangdong, Shanghai, etc.Therefore TZ='Asia/Shanghai' will be used. Local time is now: Sun Mar 24 11:54:21 CST 2013. Universal Time is now: Sun Mar 24 03:54:21 UTC 2013. Is the above information OK? 1) Yes 2) No #? 1You can make this change permanent for yourself by appending the lineTZ='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
注意每次显示对于菜单后，在出现的 #? 后面 输入对于编号就可以了；最后一行为找到的时区信息；为：
Asia/Shanghai
2、设置localtime
sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
马上就可以发现时间已经改过来了；
更多时区信息可以在以下目录中去选取：
/usr/share/zoneinfo/
