How can I change the repositories to domestic sources on Debian system?

To change the domestic source of the Debian system, you can follow these steps: 1. Open the terminal as an administrator. 2. Back up the current source list file in case you need to restore the default source.

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

3. Edit the source list file.

  sudo nano /etc/apt/sources.list

4. Comment out the original source address and add a domestic source address instead. You can choose different sources based on your needs. Save the changes and close the editor. Update the source list.

  sudo apt update

Your Debian system has now been switched to domestic sources. You can use the `apt` command to install, update, and upgrade packages, which will fetch packages from the new domestic sources. Note: Changing sources may result in changes to the versions of system packages, so it is recommended to back up important data before changing sources and proceed with caution.