centos7中设置时区、更改UTC时间为CST时间-蒲公英云

centos7中设置时区、更改UTC时间为CST时间

矫情吗；* 2021-09-21 10:34 1221阅读 0赞

设置系统时区

# 交换式设置命令
tzselect
# 依次选择设置的时区即可，下方为设置过程
[root@1889ac6ed47a /etc]# 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:    Sat Aug 29 10:33:56 CST 2020.
Universal Time is now:    Sat Aug 29 02:33:56 UTC 2020.
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

更改UTC时间为CST时间

# 备份之前的localtime文件
mv localtime{ ,.bak}
# 更改CST上海时间
ln -s /usr/share/zoneinfo/Asia/Shanghai  /etc/localtime
# 测试
[root@1889ac6ed47a /etc]# date
Sat Aug 29 10:38:26 CST 2020

系统所有亚洲的时区时间都放在了/usr/share/zoneinfo/Asia下了，用户可自行查看，系统/etc/localtime是一个软链接文件，每当系统调用本地时间都会从这个文件里读取，访问软链接localtime相当于访问/usr/share/zoneinfo/Asia/Shanghai时区文件。