时区修改
1.查询当前系统信息
> cat /etc/centos-release
2.查询操作系统的发行版号
> uname -r
3.查询当前系统时区
> timedatectl | grep "Time zone"
4.设置为北京时区
> timedatectl set-timezone Asia/Shanghai
5.查询所有时区
> timedatectl list-timezones
> cat /etc/centos-release
> uname -r
> timedatectl | grep "Time zone"
> timedatectl set-timezone Asia/Shanghai
> timedatectl list-timezones