添加开机启动脚本，开机自动赋予给串口权限
1、在/etc/rc.local最后添加要执行的脚本
2、startup.sh文件的内容是
具体参照
https://blog.csdn.net/zhouzhenhe2008/article/details/77415965
https://askubuntu.com/questions/889632/startup-script-with-sudo-in-ubuntu-16-10?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa
https://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=1&rsv_idx=1&tn=baidu&wd=source%20not%20found%20bash&oq=%25E9%25A9%25AC%25E5%2585%258B%25E9%25A3%259E%25E8%25B1%25A1&rsv_pq=a7d0f804000235d8&rsv_t=bad2OtXOxuxq8uxCGQPRiV2Fb4OPEPqDPKwr7qiXtHDhAu3vOL%2BzUBymtNU&rqlang=cn&rsv_enter=1&rsv_sug3=8&rsv_sug1=7&rsv_sug7=100&bs=%E9%A9%AC%E5%85%8B%E9%A3%9E%E8%B1%A1
因为rc.local本身在root权限下运行，所以可直接运行sudo指令
3、开机自己source devel.setup.bash文件
cd 到根目录，gedit ~/.bashrc文件后
在最后输入 source /home/zhangy/work/navigation/devel/setup.bash 就ok了