Last Updated on February 16, 2022 by admin

Advanced package tool, or APT, is a package management tool on Debian-based operating systems. In Ubuntu, the apt command is used to install or extract the packages from the particular repositories. Mostly, you won’t have any issues while using the apt command to install the packages but sometimes you might come across the error something like “add-apt-repository command not found”.

How To Add Apt Repository In Ubuntu 22.04 LTS: Fix “add-apt-repository command not found”

Install repository in Ubuntu 20.04 LTS

Run the following command to add add-apt-repository in Ubuntu. add-apt-repository is a python script, hence we are going to install a python script on Ubuntu 22.04 LTS.

sudo apt update
sudo apt install software-properties-common

How to Add Repositories with add-apt-repository

It is pretty easy and simple to install the repository of any packages in Ubuntu 20.04 LTS. In the following example, we are going to install a Ubuntu theme by adding a repository.

sudo add-apt-repository ppa:varlesh-l/papirus-pack
sudo apt-get update
sudo apt-get install papirus-gtk-icon-theme

In another example let’s install the repository or add the repository in Ubuntu by importing the public key.

Install VS code editor in Ubuntu by importing the public key and adding its repo.

Add the repository of VS code editor in Ubuntu by following the command

sudo sh -c 'echo "deb [arch=amd64,arm64,armhf signed-by=/etc/apt/trusted.gpg.d/] \ stable main" > /etc/apt/sources.list.d/vscode.list'

The repository of VS code editor will be added to sources.list the file.

Importing public key now:

wget -qO- | gpg --dearmor >
sudo install -o root -g root -m 644 /etc/apt/trusted.gpg.d/
rm -f

Now, install it.

sudo apt install code

How To enable universe and multiverse repositories in Ubuntu 22.04 LTS

Run the following command in your Ubuntu to enable universe and multiverse repositories.

  • Universe repositories consist of free and open-source software but might not be recommended by Ubuntu.
  • Multiverse contains software other than FOSS.  You need to install the packages from this repo on your own risk.
sudo add-apt-repository universe
sudo add-apt-repository multiverse
sudo apt update
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