1、命令打开 sudo gedit /etc/apt/sources.list
# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic main restricted universe multiverse
# deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiverse
# deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-updates main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiverse
# deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-backports main restricted universe multiverse
# deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiverse
# # deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-security main restricted universe multiverse
deb http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse
# deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse
# 预发布软件源，不建议启用
# deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-proposed main restricted universe multiverse
# # deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ bionic-proposed main restricted universe multiverse2 、sudo apt-get update
nano ~/.bashrc
source /home/catkin_ws/devel/setup.bash
export ROS_MASTER_URI=http://192.168.1.100:11311
export ROS_HOSTNAME=192.168.1.100
export SVGA_VGPU10=0
3、 export DISPLAY=:0.0
4、 wifi设置
nmcli dev
nmcli r wifi on
nmcli dev wifi
nmcli dev wifi connect "SSID" password "PASSWORD" ifname wlan0标签：http,restricted,M4,换源,bionic,ubuntu,ROS,multiverse,ports From： https://www.cnblogs.com/cjl520/p/17571969.html