修改Ubuntu国内镜像

修改Ubuntu国内镜像

1、原文件备份

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

2、编辑源列表文件

sudo vim /etc/apt/sources.list

3、将原来的列表删除，添加如下内容（中科大镜像源）

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

4、运行sudo apt-get update

比如 ubuntu 18.04 对应的是

deb http://cn.archive.ubuntu.com/ubuntu/ boinc main restricted universe multiverse

而 ubuntu 20.04 则是

deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse

他们的版本代号是不同的!!!

二、解决问题：更换正确的软件源

1.更改之前先记得备份一下

# 首先备份源列表
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

1. 打开sources.list文件修改, 换成对应版本的软件源, 国内一半用阿里云中科大清华比较快.

# 打开sources.list文件
sudo vim /etc/apt/sources.list
#  阿里源 Ubuntu 18.04
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
# 中科大源 Ubuntu 20.04
deb https://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse

1. 刷新列表

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install build-essential

1. 重新执行 fix 问题就解决啦

sudo apt --fix-broken install

子系统安装图形界面

更新 apt-get 源

sudo apt-get update

安装图形界面

sudo apt install xorg
sudo apt install xfce4

安装并配置远程桌面服务xrdp

# 安装xrdp 
sudo apt install xrdp

# 配置xrdp端口（将远程端口改为3390，避免和本机的3389端口冲突）
sudo sed -i 's/port=3389/port=3390/g' /etc/xrdp/xrdp.ini

# 配置xsession
sudo echo xfce4-session >~/.xsession

# 重启xrdp服务
sudo service xrdp restart

使用win10的远程桌面连接工具

localhost:3390