1.0 ubuntu系统切换阿里源

初始化root密码

sudo  passwd

bobokaka@bobokaka-desktop:/etc/apt$ sudo passwd
新的 密码： 
重新输入新的 密码： 
passwd：已成功更新密码
bobokaka@bobokaka-desktop:/etc/apt$ 

1.0 查看系统信息

lsb_release -a

bobokaka@bobokaka-desktop:~/桌面$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.1 LTS
Release:    22.04
Codename:   jammy
bobokaka@bobokaka-desktop:~/桌面$

2、进入 /etc/apt/ 目录

bobokaka@bobokaka-desktop:~/桌面$ cd /etc/apt/
bobokaka@bobokaka-desktop:/etc/apt$ ls  -al
总用量 44
drwxr-xr-x   8 root root  4096 11月 18 22:06 .
drwxr-xr-x 129 root root 12288 11月 18 22:06 ..
drwxr-xr-x   2 root root  4096 11月 18 22:07 apt.conf.d
drwxr-xr-x   2 root root  4096  4月  8  2022 auth.conf.d
drwxr-xr-x   2 root root  4096  4月  8  2022 keyrings
drwxr-xr-x   2 root root  4096  4月  8  2022 preferences.d
-rw-rw-r--   1 root root  2824 11月 18 22:06 sources.list
drwxr-xr-x   2 root root  4096  4月  8  2022 sources.list.d
drwxr-xr-x   2 root root  4096  8月  9 19:48 trusted.gpg.d
bobokaka@bobokaka-desktop:/etc/apt$ 

3、备份默认源文件

bobokaka@bobokaka-desktop:/etc/apt$ sudo cp sources.list sources.list_bak
[sudo] bobokaka 的密码： 
bobokaka@bobokaka-desktop:/etc/apt$ ls -al
总用量 48
drwxr-xr-x   8 root root  4096 11月 18 22:25 .
drwxr-xr-x 129 root root 12288 11月 18 22:06 ..
drwxr-xr-x   2 root root  4096 11月 18 22:07 apt.conf.d
drwxr-xr-x   2 root root  4096  4月  8  2022 auth.conf.d
drwxr-xr-x   2 root root  4096  4月  8  2022 keyrings
drwxr-xr-x   2 root root  4096  4月  8  2022 preferences.d
-rw-rw-r--   1 root root  2824 11月 18 22:06 sources.list
-rw-r--r--   1 root root  2824 11月 18 22:25 sources.list_bak
drwxr-xr-x   2 root root  4096  4月  8  2022 sources.list.d
drwxr-xr-x   2 root root  4096  8月  9 19:48 trusted.gpg.d
bobokaka@bobokaka-desktop:/etc/apt$ 

4、编辑源配置文件

在home下面新建一个sources.list
编辑内容

deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse

复制并覆盖数据

bobokaka@bobokaka-desktop:/etc/apt$ sudo cp /home/bobokaka/sources.list /etc/apt/sources.list
bobokaka@bobokaka-desktop:/etc/apt$ cat sources.list
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
bobokaka@bobokaka-desktop:/etc/apt$ 

5、跟新软件库

 sudo apt update

6、升级软件

sudo apt upgrade