由于源中的条目格式不正确,无法安装 ROS(Ubuntu 18.04 LTS)

由于源中的条目格式不正确,无法安装 ROS(Ubuntu 18.04 LTS)

我正在尝试安装 ROS,但无法安装,因为:

E: Malformed entry 1 in list file /etc/apt/sources.list.d/ros-latest.list (Suite)
E: The list of sources could not be read.

我该怎么办?

历史:

 1  sudo apt update
 2  sudo apt upgrade
 3  sudo apt update
 4  sudo apt install bpython
 5  bpython
 6  sudo apt install x11-apps
 7  xeyes &
 8  xcalc
 9  sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
10  sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu
11  (lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
12  sudo apt install curl # if you haven't already installed curl
13  sudo apt install curl
14  sudo apt update
15  sudo apt install ros-melodic-desktop-full
16  cat /etc/apt/sources.list.d/ros-latest.list
17  sudo add-apt-repository universe
18  sudo add-apt-repository multiverse
19  sudo apt update
20  sudo add-apt-repository universe
21  /etc/apt/sources.list.d/ros-latest.list
22  history

请求 1:

cat /etc/apt/sources.list.d/ros-latest.list
deb http://packages.ros.org/ros/ubuntu
(lsb_release -sc) main

答案1

.list文件中的这些行

deb http://packages.ros.org/ros/ubuntu
(lsb_release -sc) main

应该是这样的一行

deb http://packages.ros.org/ros/ubuntu bionic main

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