system setup

roborock

jiayao update 2019.12.05

安装ubuntu18.04

U盘制作与安装：https://www.zybuluo.com/snuffles/note/1684578

su更新密码

sudo passwd root

update source更新源

https://www.cnblogs.com/fanbi/p/10423080.htmlUbuntu18.04更换国内源（阿里，网易，中科大，清华等源）

clion集成开发环境

ubuntu软件中心下载

ROS

ROS Melodic, please follow

http://wiki.ros.org/melodic/Installation/Ubuntu

opencv

opencv version: 342
安装opencv contrib库

https://github.com/opencv/opencv_contrib