Linux (Ubuntu) system to modify the time zone and time method, linuxubuntu
1. First view the time zone:
swfsadmin@swfsubuntu:~$ date -RTue, 17 Dec 2013 18:23:01 +0800
If you want to modify the time zone, run sudo tzselect
2. Select region: Asia
swfsadmin@swfsubuntu:~$ sudo tzselect[sudo] password for swfsadmin: Sorry, try again.[sudo] password for swfsadmin: 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 Ocean10) Pacific Ocean11) none - I want to specify the time zone using the Posix TZ format.# 5
3. Select a country: China
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) Taiwan10) Cyprus 27) Lebanon 44) Tajikistan11) East Timor 28) Macau 45) Thailand12) Georgia 29) Malaysia 46) Turkmenistan13) Hong Kong 30) Mongolia 47) United Arab Emirates14) India 31) Myanmar (Burma) 48) Uzbekistan15) Indonesia 32) Nepal 49) Vietnam16) Iran 33) Oman 50) Yemen17) Iraq 34) Pakistan# 9
4. Select the time zone: Beijing Time
Please select one of the following time zone regions.1) east China - Beijing, Guangdong, Shanghai, etc.2) Heilongjiang (except Mohe), Jilin3) central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc.4) most of Tibet & Xinjiang5) west Tibet & Xinjiang# 1
5. validation:
The following information has been given: China east China - Beijing, Guangdong, Shanghai, etc.Therefore TZ='Asia/Shanghai' will be used.Local time is now: Tue Dec 17 18:22:10 CST 2013.Universal Time is now: Tue Dec 17 10:22:10 UTC 2013.Is the above information OK1) Yes2) No# 1You can make this change permanent for yourself by appending the line TZ='Asia/Shanghai'; export TZto 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 youcan use the /usr/bin/tzselect command in shell scripts:Asia/Shanghai
6. copy the file to sudo cp/usr/share/zoneinfo/Asia/Shanghai/etc/localtime7. Update Time sudo ntpdatetime.windows.com in the/etc directory.