修改時區shell
tzselect 指令只是根據提示一步步選擇正確時區,但不能真正修改時區,最後輸入提示的指令,而後重啓,才能永久修改。ubuntu
aaron@ubuntu:~$ tzselect Please identify a location so that time zone rules can be set correctly. Please select a continent, ocean, "coord", or "TZ". 1) Africa 2) Americas 3) Antarctica 4) Asia 5) Atlantic Ocean 6) Australia 7) Europe 8) Indian Ocean 9) Pacific Ocean 10) coord - I want to use geographical coordinates. 11) TZ - I want to specify the time zone using the Posix TZ format. #? 4 Please select a country whose clocks agree with yours. 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: Thu May 24 14:37:15 CST 2018. Universal Time is now: Thu May 24 06:37:15 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 // 此時時區尚未修改爲功 // 根據提示輸入 TZ='Asia/Shanghai'; export TZ 但重啓後又失效 aaron@ubuntu:~$ date Wed May 23 23:37:03 PDT 2018 aaron@ubuntu:~$ sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime [sudo] password for aaron: // 更新時間時,提示沒有安裝 ntpdate aaron@ubuntu:~$ sudo ntpdate time.windows.com sudo: ntpdate: command not found // 安裝 aaron@ubuntu:~$ sudo apt-get install ntpdate // 更新時間 aaron@ubuntu:~$ sudo ntpdate time.windows.com 24 May 14:39:02 ntpdate[1449]: adjust time server 51.140.127.197 offset 0.044998 sec aaron@ubuntu:~$ date Thu May 24 14:38:08 CST 2018 // 重啓 aaron@ubuntu:~$ sudo reboot // 時區設置成功 aaron@ubuntu:~$ date Thu May 24 14:41:10 CST 2018