1、ROS初始化 sudo rosdep init失败
https://blog.csdn.net/u014662384/article/details/106916673/
2、关于Ubuntu中Could not get lock /var/lib/dpkg/lock解决方案
https://www.cnblogs.com/yun6853992/p/9343816.html
3、sudo apt-get update出现 W: GPG 错误：http://packages.ros.org/ros/ubuntu xenial InRelease: 由于没有公钥，无法验证下列签名
https://blog.csdn.net/dragongiri/article/details/96423662
参考
https://www.cnblogs.com/chxuyuan/p/11340653.html