直接下载，一直报错
1. 添加中科大源
在命令行中输入： sudo vim /etc/apt/sources.list 或者 sudo gedit /etc/apt/sources.list
（我是使用了后面的命令）
（2）在上面打开的文件开头添加（中科大的源）
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
2. 设置安装源
sudo sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu-stable `lsb_release -cs` main" > /etc/apt/sources.list.d/gazebo-stable.list'4.检查安装源文件
cat /etc/apt/sources.list.d/gazebo-stable.list
输出为：
deb http://packages.osrfoundation.org/gazebo/ubuntu-stable xenial main
5.设置密匙
wget http://packages.osrfoundation.org/gazebo.key -O - | sudo apt-key add -
6.安装Gazebo
sudo apt-get update
sudo apt-get install gazebo9
sudo apt-get install libgazebo9-dev
7.测试
gazebo
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原文链接：https://blog.csdn.net/xp1994816/article/details/100711633