Linux 修改时区

[root@Master ~]# 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) Beijing Time
2) Xinjiang Time
#? 1

The following information has been given:

    China
    Beijing Time

Therefore TZ='Asia/Shanghai' will be used.
Local time is now:    Fri Nov 23 07:13:26 CST 2018.
Universal Time is now:    Thu Nov 22 23:13:26 UTC 2018.
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


也可以直接用下面命令直接更换时区
[root@Master ~]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
cp: overwrite ‘/etc/localtime’?