.. _Command ROS:

ROS Command Example
======================


The Follow Along Examples:

- :ref:`Command ROS` <- you are here
- :ref:`Server ROS` 
- :ref:`Client ROS`



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    <div style="background: #C3F8FF" class="admonition note custom">
        <p style="background: light-blue" class="admonition-title">
            Follow along: ROS Command Example
        </p>
        <div class="line-block">
            <div class="line">The program launching process along with parameter settings are all simplified and set up on the Jupyter Notebook Environment.</div>
        </div>
        <ul>
            <li>Open the 01_ros.ipynb Jupyter Notebook</li>
            <li>Import the necessary python libraries and modules</li>
            <li>Follow and Execute the example codes</li>

        </ul>
        <div class="line">(The Jetson Board used for these examples are => Jetson Nano)</div>
        
    </div>


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    <hr>

Open the following jupyter notebook:

-   01_ros.ipynbipynb
-   To run the cells within the notebook use *Ctrl + Enter*



-   Run the first cell to output a list of currently running ROS Nodes

.. code-block:: bash

    $ !rosnode list

.. thumbnail:: /_images/robot_control_move/comm3.png


-   Outputs joy_node Print Node information

.. code-block:: bash

    $ !rosnode info /joy_node

.. thumbnail:: /_images/robot_control_move/comm4.webp


-   Prints a list of currently running ROS topics

.. code-block:: bash

    $ !rostopic list

.. thumbnail:: /_images/robot_control_move/comm5.png


-   Output information of imu Topic

.. code-block:: bash

    $ !rostopic info /imu

.. thumbnail:: /_images/robot_control_move/comm6.png


-   Print imu Topic Message

.. code-block:: bash

    $ !rostopic echo /imu

.. thumbnail:: /_images/robot_control_move/comm7.png


-   Check process list using pm2

.. code-block:: bash

    $ pm2 list

.. thumbnail:: /_images/robot_control_move/comm8.webp


-   Output information of zetasound Node

.. code-block:: bash

    $ !rosnode info /zetasound

.. thumbnail:: /_images/robot_control_move/comm9.png