Ubuntu使用tzselect修改时区

1、命令行运行

sudo tzselect

2、选择洲区（这里选择亚洲Asia）

waichung@desktop:~$ sudo tzselect
[sudo] password for waichung:
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
 ) Africa
 ) Americas
 ) Antarctica
 ) Arctic Ocean
 ) Asia
 ) Atlantic Ocean
 ) Australia
 ) Europe
 ) Indian Ocean
) Pacific Ocean
) none - I want to specify the time zone using the Posix TZ format.
#? 

3、选择国家（这里选择中国China）

Please select a country.
 ) Afghanistan           ) Israel                ) Palestine
 ) Armenia               ) Japan                 ) Philippines
 ) Azerbaijan            ) Jordan                ) Qatar
 ) Bahrain               ) Kazakhstan            ) Russia
 ) Bangladesh            ) Korea (North)         ) Saudi Arabia
 ) Bhutan                ) Korea (South)         ) Singapore
 ) Brunei                ) Kuwait                ) Sri Lanka
 ) Cambodia              ) Kyrgyzstan            ) Syria
 ) China                 ) Laos                  ) Taiwan
) Cyprus                ) Lebanon               ) Tajikistan
) East Timor            ) Macau                 ) Thailand
) Georgia               ) Malaysia              ) Turkmenistan
) Hong Kong             ) Mongolia              ) United Arab Emirates
) India                 ) Myanmar (Burma)       ) Uzbekistan
) Indonesia             ) Nepal                 ) Vietnam
) Iran                  ) Oman                  ) Yemen
) Iraq                  ) Pakistan
#? 

4、选择北京时间

Please select one of the following time zone regions.
) Beijing Time
) Xinjiang Time
#? 

5、选Yes

The following information has been given:

    China
    Beijing Time

Therefore TZ='Asia/Shanghai' will be used.
Local time is now:    Thu May  :: CST .
Universal Time is now:    Thu May  :: UTC .
Is the above information OK?
) Yes
) No
#? 

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

方式1：在用户目录的.profile文件中加入一行下列内容，然后source ~/.profile使其生效

export TZ='Asia/Shanghai'

方式2：复制相应的时区文件到/etc目录下

sudo cp /usr/share/zoneinfo/Asia/Shanghai  /etc/localtime

6、同步时间

waichung@desktop:~$ sudo ntpdate pool.ntp.org
 May :: ntpdate[]: adjust time server 193.228.143.14 offset -0.154279 sec