Ubuntu系统自带的是国外的源,咱们国内用户使用的时候下载文件特别的慢,所以我们需要更换国内镜像源,这里我列举两个换源的方法,如果有新的方法可以在评论区补充。

首先第一步

我们需要更改root密码

sudo passwd root

命令行:

首先备份源
也可以不备份

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

打开源

sudo gedit /etc/apt/sources.list

将阿里云镜像全选,复制进去

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

保存并退出

sudo apt-get update  #这个命令会访问源列表里的每个网址，并读取软件列表，将其保存在本地
sudo apt-get upgrade  #这个命令会更新本地已安装的软件

图形化

进入下角软件库,打开软件和更新

选择其他站点

选择阿里云

选择完之后需要在更新下软件库

sudo apt-get update
sudo apt-get upgrade