View source for Arduino Uno Q Change Image Source

1.备份镜像源 <br>
我们可以先使用下面命令查看镜像源文件 <br>
'''ls -l /etc/apt/sources.list.d/''' <br>

然后我们需要先备份 debian.sources（主源）和 debian-backports.sources（backports 源），避免修改错误 <br>

'''sudo cp -a /etc/apt/sources.list.d/debian.sources /etc/apt/sources.list.d/debian.sources.bak''' <br>
'''sudo cp /etc/apt/sources.list.d/debian-backports.sources /etc/apt/sources.list.d/debian-backports.sources.bak''' <br>
[[File:修改镜像源1.png]] <br>
2.编辑主源配置文件 <br>
直接使用下方命令编辑主源我呢见 <br>

'''sudo nano /etc/apt/sources.list.d/debian.sources''' <br>

一开始如下图所示 <br>
[[File:修改镜像源2.png]] <br>
直接修改其中内容，即把URIs:后面的内容全部替换成国内清华源，按照我下图方式即可 <br>
&#35; Debian archive <br>
Types: deb<br>
URIs: https://mirrors.tuna.tsinghua.edu.cn/debian/<br>
Suites: trixie<br>
Components: main contrib non-free non-free-firmware<br>
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg<br>
<br>
&#35; Debian stable updates<br>
Types: deb<br>
URIs: https://mirrors.tuna.tsinghua.edu.cn/debian/<br>
Suites: trixie-updates<br>
Components: main contrib non-free non-free-firmware<br>
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg<br>
<br>
&#35; Debian security updates<br>
Types: deb<br>
URIs: https://mirrors.tuna.tsinghua.edu.cn/debian-security/<br>
Suites: trixie-security<br>
Components: main contrib non-free non-free-firmware<br>
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg<br>
[[File:修改镜像源3.png]] <br>
接下来同步更新 backports 源，也是只需要修改URIs：后面的内容，直接复制粘贴下述文本即可，可以参考图片<br>
'''sudo nano /etc/apt/sources.list.d/debian.backports.sources''' <br>
&#35; Debian backports<br>
Types: deb<br>
URIs: https://mirrors.tuna.tsinghua.edu.cn/debian/<br>
Suites: trixie-backports<br>
Components: main contrib non-free non-free-firmware<br>
Enabled: yes<br>
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg<br>
[[File:修改镜像源4.png]] <br>
3.更新源缓存<br>
直接使用命令即可<br>
'''sudo apt update'''<br>
[[File:修改镜像源5.png]] <br>
可以看到之前修改的清华源出现