[root@iZt4nbfbkurxm1k2bmdsqvZ /]# tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.1) Africa2) Americas3) Antarctica4) Arctic Ocean5) Asia6) Atlantic Ocean7) Australia8) Europe9) 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) Palestine2) Armenia          19) Japan            36) Philippines3) Azerbaijan          20) Jordan            37) Qatar4) Bahrain          21) Kazakhstan        38) Russia5) Bangladesh          22) Korea (North)        39) Saudi Arabia6) Bhutan          23) Korea (South)        40) Singapore7) Brunei          24) Kuwait            41) Sri Lanka8) Cambodia          25) Kyrgyzstan        42) Syria9) 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
#? 15
Please select one of the following time zone regions.
1) Java, Sumatra
2) Borneo (west, central)
3) Borneo (east, south); Sulawesi/Celebes, Bali, Nusa Tengarra; Timor (west)
4) New Guinea (West Papua / Irian Jaya); Malukus/Moluccas
#? 1

The following information has been given:IndonesiaJava, SumatraTherefore TZ='Asia/Jakarta' will be used.
Local time is now:    Wed Sep 27 12:58:33 WIB 2017.
Universal Time is now:    Wed Sep 27 05:58:33 UTC 2017.
Is the above information OK?
1) Yes
2) No
#? 1

You can make this change permanent for yourself by appending the lineTZ='Asia/Jakarta'; 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/Jakarta
[root@iZt4nbfbkurxm1k2bmdsqvZ /]# 

1.vi /etc/sysconfig/clock
2.ZONE=Asia/Jakarta（查/usr/share/zoneinfo下面的文件）
3.rm /etc/localtime
4.ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

[root@iZt4nbfbkurxm1k2bmdsqvZ /]# date
Wed Sep 27 13:00:57 WIB 2017
[root@iZt4nbfbkurxm1k2bmdsqvZ /]# date -R
Wed, 27 Sep 2017 13:01:06 +0700
[root@iZt4nbfbkurxm1k2bmdsqvZ /]#