windows在虚拟机上安装Ubuntu
VMtools选择 open-vm-tools，不要直接安装，16会出问题
Ubuntu安装ROS：
http://wiki.ros.org/melodic/Installation/Ubuntu
https://blog.csdn.net/qq_44830040/article/details/106049992
解决TimeOut问题：
https://blog.csdn.net/leida_wt/article/details/115120940
均可通过在地址前添加https://ghproxy.com/前缀来应用代理服务。
311行：
sudo gedit /usr/lib/python2.7/dist-packages/rosdep2/sources_list.py
68行
sudo gedit /usr/lib/python2.7/dist-packages/rosdistro/__init__.py
36行：
sudo gedit /usr/lib/python2.7/dist-packages/rosdep2/gbpdistro_support.py
72行：
sudo gedit /usr/lib/python2.7/dist-packages/rosdep2/sources_list.py
39行
sudo gedit /usr/lib/python2.7/dist-packages/rosdep2/rep3.py
68行；119行
sudo gedit /usr/lib/python2.7/dist-packages/rosdistro/manifest_provider/github.py
