如何修改linux时间？ 校正linux系统的时间

第一步：通过xshell远程连接到linux系统

　　　　

第二步：输入 tzselect

　　　　

第三步：选择所在的州，中国人请选择 5 ，亚洲

　　　　

第四步：选择你所在的国家，中国人请选择9，中国

　　　　

第五步：选择一个时区，大部分人选择北京时间

　　　　

插入完整修改过程：

　　　　

 [root@localhost ~]#  tzselect
 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
 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
 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
 
 The following information has been given:

     China
     east China - Beijing, Guangdong, Shanghai, etc.

 Therefore TZ='Asia/Shanghai' will be used.
 Local time is now:    Sat Aug  6 17:55:56 CST 2016.
 Universal Time is now:    Sat Aug  6 09:55:56 UTC 2016.
 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
 [root@localhost ~]#
 [root@localhost ~]#