http://wiki.ros.org/usb_cam usb_cam - ROS Wiki melodic noetic Show EOL distros: EOL distros: electric fuerte groovy hydro indigo jade kinetic lunar diamondback: Only showing information from the released package extracted on Unknown. No API documentation available. Please see this page for in wiki.ros.org git clone USB_CAM roswiki git clone https://github.com/ros-drivers/usb_cam.git and install ..
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solution: gedit ~/.bashrc add this command source ~/catkin_ws/devel/setup.bash save and apply. source ~/.bashrc example # ~/.bashrc: executed by bash(1) for non-login shells. # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc) # for examples # If not running interactively, don't do anything case $- in *i*) ;; *) return;; esac # don't put duplicate lines or lines starting w..