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What is the difference between source devel/setup.bash and source /opt/ros/melodic/setup.bash? [closed]

asked 2020-08-19 08:22:18 -0500

MaxM
20 ●4 ●7 ●6

I always thought that when you sourced the workspace you had to type source /opt/ros/melodic/setup.bash, but recently someone on Ros Answers said that you had to type source devel/setup.bash. It didn't really solve the problem, but nevertheless, I would like to know what the difference is between these two.