Raspberry Pi achieve power on automatically synchronized network time

1 #安装NTP
2 sudo apt-get install ntpdate
3 #选择 上海时区
4 sudo dpkg-reconfigure tzdata

Here screen will appear, first select Asia, and then select Shanghai.

#同步时间
#添加到/etc/rc.local里面实现开机自启动
sudo ntpdate cn.pool.ntp.org

#查看当前时间
date