In the previous chapter, we __installed a program__ from the official website, but there's an __alternative method__ that allows you to quickly download or update a program from the __Ubuntu repository__.

The **Ubuntu repository** is a **centralized software storage** used for **storing, managing, and distributing software packages** for the **Ubuntu operating system**. It's a **key component** of the **package management system**, enabling users to easily **install**, **update**, and **remove programs**.

The primary **Ubuntu repositories** include **official**, **partner**, and **universe repositories**. **Official repositories** contain software officially supported by **Ubuntu**, while **partner repositories** contain software from **Canonical partners**, the company behind **Ubuntu**. **Universe repositories** contain **packages** that can be **installed** on any **Ubuntu version**.

## Installing a Program from a Repository

Let's try to find a program in the repository and install it. The video demonstrates how to do this using the example of installing the media player "Clementine". The installation process for other programs will look similar.


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The command `sudo apt update` is used to **update** the list of packages from the **Ubuntu repositories** on your computer. It doesn't **install or update** the programs themselves; it simply **refreshes** the information about the **availability** and **versions** of packages in the repositories. Using the `sudo apt update` command before installing programs helps ensure the **accuracy** and **efficiency** of the **software installation process** on your computer.

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The **primary use** of this command is to quickly find a package containing a specific file or program, or packages related to a specific term. For example, if you're looking for a particular program or file but don't know which package contains it, the `sudo apt search` command will help you find it. 

`<package_name>`: This is a command-line argument that specifies the name or part of the name of the program you want to find.


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So, the command `sudo apt install <package_name>` allows you to quickly and conveniently install new programs on your Ubuntu system using official package distribution channels.

`<package_name>`: This is a command-line argument that specifies the name of the program you want to install. You can specify the name of a program that is located in Ubuntu's official repositories.

Learning Linux is valuable for many IT professions. For system administrators, DevOps engineers, and backend developers, it enables efficient server management, automation of software development and deployment, and the development and management of server-side applications. For network administrators, cybersecurity professionals, and data analysts, Linux knowledge helps effectively manage networks, ensure security, and analyze data.

In this section, we'll learn about what Linux is, and also download one of the operating systems based on it.

In this section, we will create a virtual machine on your computer and install Linux on it.

In this section, you will learn the basic skills for working with the Linux operating system, which differ from working with Windows or macOS.

In this section, you will learn how to work with users and their groups, as well as how to configure access rights for them.

Linux Basics

The Ubuntu Repository

Installing a Program from a Repository