Rosrun command is not found in the fourth module of Linux for Robotics

During the fourth module, Advanced Utilities II, in Linux for Robotics, in exercise 4.1, whenever I try to execute the program using the command rosrun move_bb8_pkg test_process.py, I get an error stating “bash: rosrun: command not found”. What am I doing wrong?

Seems like an error related to the terminal. Maybe the .bashrc script didn’t execute properly at the beginning.
But just in case, can you confirm if the file is set to be executable?

Thanks, I realized the file wasn’t executable.

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