1. 查看当前系统时间

date

2. 设置时区

sudo 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 timezone using the Posix TZ format.
#?

之后依次输入
4 （Asia），9（China)，1(Beijing Time)，1(Yes)

3. 将文件复制到localtime目录下

sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

4. 确认时间

date

5. 重启操作系统

sudo reboot now