wsl安装ros
我是在 WSL 的 Ubuntu 18.04 LTS 上安装 ROS。
准备工作
换源
我这是Ubuntu 18.04 LTS的清华源，如果需要其他版本的源，去清华软件镜像站自己寻找。
sudo nano /etc/apt/sources.list
#把里面的内容删光，换成清华的源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
#deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
#deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
#deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
#deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
#预发布软件源，不建议启用
#deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
#deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
更新
更新源
sudo apt-get update
更新软件
sudo apt-get upgrade
正式安装ROS
添加 ROS 的源，下面二选一就行
sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
sudo sh -c '. /etc/lsb-release && echo "deb http://mirrors.tuna.tsinghua.edu.cn/ros/ubuntu/ $DISTRIB_CODENAME main" > /etc/apt/sources.list.d/ros-latest.list'
设置密钥（拆分开来添加，防止报 curl 错误）
curl -O https://raw.githubusercontent.com/ros/rosdistro/master/ros.asc
sudo apt-key add ros.asc
更新
sudo apt update
sudo apt upgrade
# 安装对应的 ROS 版本(官网推荐是装full)
sudo apt install ros-melodic-desktop-full # 这里要装很久，所以尽量别出错
（我用这个命令出错了，
The following packages have unmet dependencies:
ros-melodic-desktop-full : Depends: ros-melodic-desktop but it is not going to be installed
Depends: ros-melodic-perception but it is not going to be installed
Depends: ros-melodic-simulators but it is not going to be installed
Depends: ros-melodic-urdf-sim-tutorial but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
root@L5288456A005:/home/yuliang# sudo apt-get ros-melodic-desktop
E: Invalid operation ros-melodic-desktop）
然后用的这个命令：
sudo aptitude install ros-melodic-desktop-full
设置环境变量，这里我用的终端是 zsh
echo "source /opt/ros/melodic/setup.zsh" >> ~/.zshrc
source ~/.zshrc
安装依赖包
sudo apt install python-rosdep python-rosinstall python-rosinstall-generator python-wstool build-essential
sudo apt install python-rosdep
初始化
sudo rosdep init
rosdep update # 可能需要科学上网
安装 rosinstall
sudo apt install python-rosinstall python-rosinstall-generator python-wstool build-essential
安装图形化界面 Xserver
因为这不是完整的 Ubuntu Linux 系统，所以缺少相对应的图形化界面。所以需要自己安装，我这里安装的是 VcXsrv
配置环境变量 DISPLAY
echo "export DISPLAY=localhost:0" >> ~/.bashrc # wsl 1
echo "export DISPLAY=`cat /etc/resolv.conf | grep nameserver | awk '{print $2}'`:0" >> ~/.bashrc # wsl 2
source ~/.bashrc
然后打开安装的 XLaunch，Display Number 改为0。
这里先用 xeyes 测试一下，你也可以用下面几个测试。
sudo apt install x11-apps
xeyes
如果你看到一双大眼睛，就说明安装成功了。
测试 ROS 是否安装成功
一定要先打开 XLaunch！
运行 Rviz
先打开一个终端
roscore
再打开第二个终端
rosrun rviz rviz
运行小乌龟
先打开一个终端
roscore
打开第二个终端
rosrun turtlesim turtlesim_node
（如果报错[rospack] Error: package ‘turtlesim’ not found，解决方法如下）
sudo apt-get install ros-$(rosversion -d)-turtlesim
打开第三个终端
rosrun turtlesim turtle_teleop_key
这时会出现一个小乌龟，在第三个终端里控制其进行移动。