ubuntu20.04調整時區時間同步

• root身份操作

#檢查系統時區
timedatectl
---
               Local time: Wed 2020-05-06 19:33:20 UTC
           Universal time: Wed 2020-05-06 19:33:20 UTC
                 RTC time: Wed 2020-05-06 19:33:22    
                Time zone: UTC (UTC, +0000)           
System clock synchronized: yes                         
              NTP service: active                      
          RTC in local TZ: no   
---
# 查看鏈接
ls -l /etc/localtime
---
lrwxrwxrwx 1 root root 27 Dec 10 12:59 /etc/localtime -> /usr/share/zoneinfo/Etc/UTC
---

# 系統的時區同時也被寫入/etc/timezone文件：
cat /etc/timezone
---
UTC
---
# 使用timedatectl命令修改時區
timedatectl list-timezones
---
比如中國時區
Asia/Shanghai
---
# 設置具體時區
timedatectl set-timezone <your_time_zone>
---
e.g. timedatectl set-timezone Asia/Shanghai
---
# 運行命令，驗證修改
timedatectl

# tips
# 設置為24小時顯示
# 查看文件
cat /etc/default/locale
---
LANG=en_US.UTF-8
---
# 加入一行
echo "LC_TIME=en_DK.UTF-8" >> /etc/default/locale

# 重啟機器
reboot