查看系统的时区
$ ll /etc/localtime
lrwxrwxrwx. 1 root root 35 2月 18 2020 /etc/localtime -> ../usr/share/zoneinfo/UTC
列出有效的时区
$ timedatectl list-timezones
Africa/Abidjan
......
America/New_York
......
Asia/Shanghai
......
设置时区
# timedatectl set-timezone Asia/Shanghai
查看系统的时区
$ ll /etc/localtime
lrwxrwxrwx. 1 root root 35 2月 18 2020 /etc/localtime -> ../usr/share/zoneinfo/Asia/Shanghai