1. First check the time zone:
swfsadmin@swfsubuntu:~$ date -R Tue, 17 Dec 2013 18:23:01 +0800
If you want to change the time zone, execute 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 Ocean 10) Pacific Ocean 11) none - I want to specify the time zone using the Posix TZ format. #? 5
3. Select 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) 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
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), Jilin 3) central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc. 4) most of Tibet & Xinjiang 5) west Tibet & Xinjiang #? 1
5. Confirm the verification:
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 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
6. Copy the file to the /etc directory
sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
7. Update time
sudo ntpdate time.windows.com
Change time reference:
http://5154091.blog.hexun.com/30735220_d.html
Change the time
sudo date -s MM/DD/YY //modified date sudo date -s hh:mm:ss //Modification time
After modifying the time, modify the time of the hardware CMOS
sudo hwclock --systohc //very important, without this step, the later time is still not allowed