解决Ubuntu18.04安装ros报错E: Unable to locate package ros-melodic-desktop-full

[原文链接](https://answers.ros.org/question/345764/e-unable-to-locate-package-ros-melodic-desktop-full-or-ros-melodic-desktop/

步骤:

  1. Setup your sources list:sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
  2. Set up your keys sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
  3. Run sudo apt update
  4. Install your ros version sudo apt install ros-melodic-desktop-full

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