ROS system problem: rosdep init

The article quoted

weixin_43288910 User ERROR:

Problem description ： install ROS After the system rosdep init There is a problem

Problem phenomenon ：

$ sudo rosdep init
ERROR: cannot download default sources list from:
https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.list
Website may be down.

reason

 Unable to connect to the Internet server , Need to find it ip

Solution steps

1、 stay ubuntu Open in https://www.ipaddress.com/ Website ：

2、 Input... In front of the magnifying glass in the input field raw.githubusercontent.com Address ：

3、 Check the address below ：

4、 open /etc Below hosts And modify , Add... At the end of the file ip + raw.githubusercontent.com, Replace ip Then try rosdep init

Open the file to change the address . Save after changing the address ctrl+s Or above save.

sudo gedit /etc/hosts

5、 Author's personal test is available , After modification, see Figure ：

 sudo rosdep init
Wrote /etc/ros/rosdep/sources.list.d/20-default.list
Recommended: please run

	rosdep update