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If you want to use groovy, not hydro, you source the file /opt/ros/groovy/setup.bash not /opt/ros/hydro/setup.bash.

If you want to use groovy, not hydro, you should source the file /opt/ros/groovy/setup.bash not /opt/ros/hydro/setup.bash.

If you want to use groovy, not hydro, you should source the file /opt/ros/groovy/setup.bash not /opt/ros/hydro/setup.bash.

Edit:

Please open your the file ~/.bashrc in an editor and check the lines that relate to ros (likely at the end of the file). There should be one line source /opt/ros/groovy/setup.bash. If there are multiple, or lines containting hyrdo, like source /opt/ros/hydro/setup.bash, then remove them and try again by opening a fresh terminal.

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