时间系统：ubuntu系统下禁用utc时间的设置方法

sudo timedatectl set-local-rtc 1 

$ timedatectl         
   Local time: 六 2016-04-23 09:05:54 CST 
 Universal time: 六 2016-04-23 01:05:54 UTC 
    RTC time: 六 2016-04-23 09:05:54 
    Time zone: Asia/Shanghai (CST, +0800) 
 Network time on: yes 
NTP synchronized: no 
 RTC in local TZ: yes 
 
Warning: 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'.