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linux修改时区不生效的解决办法：1、登录linux系统，进入终端；2、拷贝配置文件来修改时区；3、通过“hwclock --show”命令查看硬件时钟，然后设置设置硬件时钟；4、通过“vim /etc/timezone Asia/Shanghai”修改时区即可。
一、选择时区
# 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 Ocean10) Pacific Ocean11) none - I want to specify the time zone using the Posix TZ format.#? 5Please 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) Taiwan10) Cyprus 27) Lebanon 44) Tajikistan11) East Timor 28) Macau 45) Thailand12) Georgia 29) Malaysia 46) Turkmenistan13) Hong Kong 30) Mongolia 47) United Arab Emirates14) India 31) Myanmar (Burma) 48) Uzbekistan15) Indonesia 32) Nepal 49) Vietnam16) Iran 33) Oman 50) Yemen17) Iraq 34) Pakistan#? 9Please select one of the following time zone regions.1) Beijing Time2) Xinjiang Time#? 1The following information has been given: China Beijing TimeTherefore TZ='Asia/Shanghai' will be used.Local time is now: Fri Jan 4 16:02:54 CST 2019.Universal Time is now: Fri Jan 4 08:02:54 UTC 2019.Is the above information OK?1) Yes2) No#? 1You can make this change permanent for yourself by appending the line TZ='Asia/Shanghai'; export TZto 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 youcan use the /usr/bin/tzselect command in shell scripts:Asia/Shanghai
二、拷贝配置文件来修改时区
rm -f /etc/localtime ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
三、查看硬件时钟
hwclock --show
四、设置硬件时钟
hwclock --set --date="10/22/18 22:00"
五、同步系统硬件时钟
hwclock --hctosys
六、修改时区文件
vim /etc/timezone Asia/Shanghai
七、查看时间
# timedatectl Local time: 五 2019-01-04 15:57:15 CET Universal time: 五 2019-01-04 14:57:15 UTC RTC time: 五 2019-01-04 15:57:15 Time zone: Asia/Shanghai (CET, +0100) NTP enabled: yesNTP synchronized: no RTC in local TZ: yes DST active: no Last DST change: DST ended at 日 2018-10-28 02:59:59 CEST 日 2018-10-28 02:00:00 CET Next DST change: DST begins (the clock jumps one hour forward) at 日 2019-03-31 01:59:59 CET 日 2019-03-31 03:00:00 CESTWarning: The system is configured to read the RTC time in the local time zone. This mode can not be fully supported. It will create various problems with time zone changes and daylight saving time adjustments. The RTC time is never updated, it relies on external facilities to maintain it. If at all possible, use RTC in UTC by calling 'timedatectl set-local-rtc 0'.
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