ros 安装遇到 raw.githubusercontent.com无法访问，被墙的问题，尝试有效解决方案

本文链接：https://blog.youkuaiyun.com/lvmengzou/article/details/111658144

这篇博客讲述了在Ubuntu环境中遇到rosdep初始化时下载默认源列表失败的问题，通过编辑hosts文件添加raw.githubusercontent.com的IP地址来解决。解决后成功执行rosdepinit和rosdepupdate，完成了ROS依赖项的更新。

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问题：

gb@gb-VirtualBox:~$ sudo rosdep init
[sudo] gb 的密码：
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.

解决方法

sudo vim /etc/hosts

增加：

151.101.76.133 raw.githubusercontent.com

重新开启终端尝试

gb@gb-VirtualBox:~$ sudo rosdep init
[sudo] gb 的密码：
Wrote /etc/ros/rosdep/sources.list.d/20-default.list
Recommended: please run

rosdep update

gb@gb-VirtualBox:~$ rosdep update
reading in sources list data from /etc/ros/rosdep/sources.list.d
Hit https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml
Hit https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml
Hit https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml
Hit https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml
Hit https://raw.githubusercontent.com/ros/rosdistro/master/releases/fuerte.yaml
Query rosdistro index https://raw.githubusercontent.com/ros/rosdistro/master/index-v4.yaml
Skip end-of-life distro "ardent"
Skip end-of-life distro "bouncy"
Skip end-of-life distro "crystal"
Add distro "dashing"
Add distro "eloquent"
Add distro "foxy"
Skip end-of-life distro "groovy"
Skip end-of-life distro "hydro"
Skip end-of-life distro "indigo"
Skip end-of-life distro "jade"
Add distro "kinetic"
Skip end-of-life distro "lunar"
Add distro "melodic"
Add distro "noetic"
Add distro "rolling"
updated cache in /home/gb/.ros/rosdep/sources.cache
gb@gb-VirtualBox:~$