ROS build and run packages (Let's Build an Autonomous Toy Car! series)

ros_build_run.sh

# Source ROS env
source /opt/ros/melodic/setup.bash

# Create package (in path/to/workspace/src)
# NB: std_msgs and rospy are dependencies
# catkin_create_pkg my_package std_msgs rospy

# Create scripts directory in package root
# mkdir scripts

# Create python script(s) e.g:
# touch scripts/my_script.py

# Make script(s) executable
# chmod +x my_script.py

# Build packages (in path/to/workspace)
catkin_make

# Setup workspace env (in path/to/workspace)
source devel/setup.bash

# Start ROS
roscore

# Run package
rosrun my_package my_script.py

# Test a publisher node
# rostopic echo topic_name