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<p>usage: ros2 [-h] Call `ros2 &lt;command&gt; -h` for more detailed usage. ...</p>

<p>ros2 is an extensible command-line tool for ROS 2.</p>

<p>optional arguments:</p>

:<p>-h, --help show this help message and exit</p>

<p>Commands:</p>

:<p>topic Various topic related sub-commands</p>

:<p>wtf Use `wtf` as alias to `doctor`</p>

:<p>Call `ros2 &lt;command&gt; -h` for more detailed usage.</p>