Learning ROS: Getting started with roswtf （检查ROS系统，找出问题）

本文主要部分来源于ROS官网的Tutorials.

roswtf是ROS的检查工具，用于检查ROS安装和运行系统。

Checking your installation&Offline

make sure your roscore is NOT running.

$ roscd
$ roswtf

Trying it online

$ roscore &
$ roscd
$ roswtf

Trying it with Errors

Stop the roscore to simplify the output that you see.

$ roscd
$ ROS_PACKAGE_PATH=bad:$ROS_PACKAGE_PATH
$ roswtf

 roswtf now gives us an error about the ROS_PACKAGE_PATH setting.