Linux (Ubuntu) system to modify the time zone and time method, linuxubuntu

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.