ROS安装：sudo rosdep init&&rosdep update报错 解决办法

Ubuntu16.04 安装ROS Kinetic时，有两句命令总是报错，记录一下解决方法。

$sudo rosdep init

出现报错

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.

$rosdep update

出现报错

ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml]:
    <urlopen error timed out> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml)

方法一：最好用的方法就是用ssr，并在终端也配置好：

export http_proxy=http://ip:端口
export https_proxy=http://ip:端口

方法二：

$sudo gedit /etc/hosts

 最下边一行加上：

199.232.28.133 raw.githubusercontent.com

然后保存重试

<