How To Install Third-Party Linux Applications with Deb-Get
Your Linux distro already comes with a great package manager; but sometimes you need applications that aren’t available via the official repositories.
Third party applications; such as Google Chrome, Slack, Zoom, Visual Studio Code are provided by their respective publishers. For Debian and Ubuntu systems these are provided as Debian package files (.deb) and for Fedora / Red Hat as RPM packages. These packages can be installed using your preferred OS GUI package manager; or they can be installed using a command line tool. But what if we had a tool which handled downloading, installing, upgrading and removing these third-party packages for us?
Deb-get, from Martin Wimpress is “a high-level command line interface for the package management system to easily install and update packages published in 3rd party apt repositories or via direct download.” With deb-get we can download and install third party packages without leaving the terminal.
How can we use deb-get and what applications are available? Let’s find out. We tested the process on two machines; a laptop running Ubuntu 21.04 and a desktop running Kubuntu 22.04.

Our laptop, running 21.04 failed to install deb-get; advising us that it was not a supported release. We dug into deb-get’s source code and found that Ubuntu 22.04, 21.10 and 20.04 are the only supported releases. Our Kubuntu 22.04 desktop had no issues, however.
Install Deb-Get
The installation process for deb-get uses, deb-get. We download a copy of the application from Wimpress’ Github repository and then run the command to install it onto our system.
1. Open a terminal and update the software repositories list. This enables our machine to install the latest software from the software repositories.
sudo apt update
2. Install the curl application.
sudo apt install curl
Curl is used to download the deb-get application from the Github repository. It is highly likely that your version of curl is up-to-date; but it is always best to check.
3. Use curl to download deb-get to your machine, then run the installation using sudo.
curl -sL https://raw.githubusercontent.com/wimpysworld/deb-get/main/deb-get | sudo -E bash -s install deb-get
How-to Use deb-get

Behaving in much the same way as apt and apt-get; deb-get has a similar set of commands to manage applications on our machine.
We start by installing an application; after consulting the list of supported software we chose to install Microsoft’s Edge web browser for Linux.
1. Open a terminal and update the deb-get package index files. This is essentially the same as our software repositories list.
sudo deb-get update

2. Use deb-get with the install argument to download the latest stable version of Microsoft Edge for Linux. Remember to consult the support software list to get the name of the application that you wish to install.
sudo deb-get install microsoft-edge-stable

We can update all of the applications installed via deb-get via one command. It will even catch supported applications installed before deb-get has been installed. The application upgraded Zoom and Raspberry Pi Imager, both of which were installed before we installed deb-get.
sudo deb-get upgrade
To search for a particular application, we can use the search argument. For example, here is the command to search for Firefox. Note that the output shows the name that we should use for installation.
sudo deb-get search firefox

Read more: https://www.tomshardware.com/how-to/install-linux-apps-with-deb-get