Missing linux_exam_cmd in Linux for Robotics course

[alex.alcocer]

Hello,
There is a missing linux_exam_cmd package in Linux for Robotics course, needed to complete exam.

user:~/catkin_ws$ rosrun linux_exam_cmd takeoff_drone.py
[rospack] Error: package 'linux_exam_cmd' not found

[ralves]

Hi @alex.alcocer,

welcome to our community, and thanks for letting us know about this error.

I see we failed to include this packages in the computers used in the academy.

In the mean time, could you please clone the repository below in your workspace?

The commands would be:

cd ~/catkin_ws/src
git clone https://bitbucket.org/theconstructcore/ros_basics_examples

After this, you should be able to see the package.
Please let us know in case you find any other issues.

[ralves]

Ok, I was reviewing the auto-correction system, and it is correct that the linux_exam_cmd package does not exist for the users. However, it does exist in the auto-correction environment.

So, for the moment, until we solve it once for all, when you have this error again, you can just ignore and submit the quiz anyway.

For more details, please follow the link below in which the problem is detailed:

Exam fails to grade, disconnects after 3 first grades

Hi @s325927 and @joubr13, thank you very for pointing out these problems. I’ve been investigating this issue and found the reason behind it. To contextualize to newcomers, when @s325927 reported that the linux_exam_cmd pkg didn’t exist, I recommended downloading a repository that contains that package, and now, when you try to run the quiz, it fails because of a duplicated package. That happens because the auto-correction system already defines this package, that is why a duplicated package …