I am fairly new to ROS and Ubuntu. I just followed the instructions as given on: https://pcl.readthedocs.io/en/latest/extract_indices.html I created a new folder called Extract_Indices in a catkin workspace called catkin_ws2 Then made a new file named: extract_indices.cpp Then another file named: CMakeLists.txt -> Extract_Indices folder I run the command: ./extract_indices
I get an error saying such a file doesnt exist. I am not sure if this is a very simple question. But any help and patience is appreciated. Thank you.