【CentOS 7】修改时区
安装系统（CentOS 7.3）时，不小心，时区忘记修改了（默认情况下New_York的时区）
修改方法1：软链接（推荐）
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## 确认当前时区，或者通过 date -R 命令来查看当前服务器所设置的时区 ## localtime为软链接到....../America/New_York [root@sy82 ~]# ll /etc | grep local -rw-r--r--. 1 root root 19 Feb 14 14:56 locale.conf lrwxrwxrwx. 1 root root 38 Feb 14 14:56 localtime -> ../usr/share/zoneinfo/America/New_York lrwxrwxrwx. 1 root root 13 Feb 14 14:55 rc.local -> rc.d/rc.local [root@sy82 ~]# [root@sy82 ~]# ## 确认Shanghai的时区文件的路径准确无误 [root@sy82 ~]# ll /usr/share/zoneinfo/Asia/Shanghai -rw-r--r--. 5 root root 388 Oct 3 2016 /usr/share/zoneinfo/Asia/Shanghai [root@sy82 ~]# [root@sy82 ~]# ## 通过软链接，链接到/etc/localtime [root@sy82 ~]# ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime [root@sy82 ~]# [root@sy82 ~]# ## 此时，时区已修改完成 [root@sy82 ~]# ll /etc | grep local -rw-r--r--. 1 root root 19 Feb 14 14:56 locale.conf lrwxrwxrwx. 1 root root 33 Feb 14 15:34 localtime -> /usr/share/zoneinfo/Asia/Shanghai lrwxrwxrwx. 1 root root 13 Feb 14 14:55 rc.local -> rc.d/rc.local [root@sy82 ~]# |
修改方法2：通过tzselect工具，生成环境变量
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[root@sy83 ~]# 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: Mon Feb 14 15:40:33 CST 2022. Universal Time is now: Mon Feb 14 07:40:33 UTC 2022. 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@sy83 ~]# |
提示，需要修改环境变量，也就是说，这个工具的作用是生成环境变量，然后通过修改环境变量的配置文件来修改时区。