Ubuntu 修改时区和更新时间
修改时区
先查看当前系统时区。
root@ubuntu:/# date -R
Wed, 06 May 2020 04:49:31 -0400
结果时区是：-0400
我需要的是东八区，这儿显示不是，所以需要设置一个时区。
# 运行tzselect
root@ubuntu:/# tzselect
# 选择亚洲 Asia，确认之后选择中国（China)，最后选择北京(Beijing)
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.
Selected time is now: Wed May 6 16:49:49 CST 2020.
Universal Time is now: Wed May 6 08:49:49 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
复制文件到 /etc 目录下。
root@ubuntu:/# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
再次查看时间 date -R，已经修改为北京时间
root@ubuntu:/# date -R
Wed, 06 May 2020 16:50:30 +0800
修改时间
sudo date -s MM/DD/YY //修改日期
sudo date -s hh:mm:ss //修改时间
sudo hwclock --systohc //非常重要，如果没有这一步的话，后面时间还是不准
转载信息
版权声明：本文为CSDN博主「zhengchaooo」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。 原文链接：https://blog.csdn.net/zhengchaooo/java/article/details/79500032