How to add update source in linux

Add steps: 1. Open a terminal window; 2. Use a text editor (such as vi or nano) to open the /etc/apt/sources.list file and use "sudo vi /etc/apt/sources.list " command to open the file and add a new update source; 3. Save and close the file; 4. Use the "sudo apt-get update" command in the terminal window to update the update source list to add a new update source.

To add an update source, you can follow these steps:

• Open a terminal window.
• Use a text editor (such as vi or nano) to open the /etc/apt/sources.list file. You can open the file using the following command:

  sudo vi /etc/apt/sources.list

• In the opened file you can add a new update source. Each update source should occupy one line and should begin with "deb" or "deb-src", followed by the URL of the update source. For example:

  deb http://archive.ubuntu.com/ubuntu xenial main restricted
  deb-src http://archive.ubuntu.com/ubuntu xenial main restricted

• Save and close the file.
• Use the following command in a terminal window to update your update source list:

  sudo apt-get update

The new update source is added and you can use the apt-get command to install or update software Bag.

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