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在学习ROS kinetic wiki中的编写简单的Service和Client (Python)中编写服务端的时候运行的时候发现：from: can't read /var/mail/beginner_tutorials.srv/home/xzchuang/catkin_ws/src/beginner_tutorials/scripts/add_two_ints_server.py: 行 6:

在学习ros/tf2函数库的时候，在launch文件中添加了节点之后发现无法启动，出现一下错误：... logging to /home/xzchuang/.ros/log/76b69150-e5f4-11e7-a49a-484d7ec9f3d5/roslaunch-Vostro-14838.logChecking log directory for disk usage. This may ta

1.安装rbx1cd ~/catkin_ws/srcgit clone https://github.com/pirobot/rbx1.git cd ..catkin_makerospack profile2.安装Arbotix模拟器cd ~/catkin_ws/srcgit clone https://github.com/vanadiumlabs/arbotix_ros.gitcd

1.环境准备Ubuntu16.04ROS-kineticopencv3.3.1video-stream-opencv一个USB摄像头video-stream-opencv是USB摄像头驱动，关于它的介绍，请看github:https://github.com/ros-drivers/video_stream_opencv安装video-stream-opencvcd ~/catkin_ws/