Install .deb Files in Ubuntu

Ubuntu 22.04 LTS (Jammy Jellyfish) is a powerful and user-friendly Linux distribution that supports the installation of software packages using .deb files. A .deb file is a Debian Software Package that contains the necessary files to install an application or software in Ubuntu or Debian-based systems. This post explores various ways to install .deb files in Ubuntu 22.04 through the terminal, addressing different scenarios you might encounter.

Why Use .deb Files? 🗂️

• Offline Installation – No need for internet access during installation.
• Software Not in Repositories – Some applications aren’t available through Ubuntu’s default repositories.
• Latest Software Versions – Developers often distribute the latest releases as .deb files.

Prerequisites 🛠️

• Ubuntu 22.04 LTS installed
• Access to the terminal
• Administrative privileges (sudo)

1. Installing .deb Files Using dpkg (Debian Package Manager) 📦

The dpkg command is the standard way to install .deb files.

Basic Command:

sudo dpkg -i package_name.deb

Example:

sudo dpkg -i google-chrome-stable_current_amd64.deb

Explanation:

• -i stands for install.
• If dependencies are missing, the installation might fail.

Fixing Dependency Issues 🔄:

sudo apt --fix-broken install

This command attempts to fix broken dependencies that may arise during the installation.

2. Installing .deb Files Using apt (Advanced Packaging Tool) 🧰

apt handles dependencies automatically, making it a preferred choice.

Basic Command:

sudo apt install ./package_name.deb

Example:

sudo apt install ./google-chrome-stable_current_amd64.deb

Explanation:

• ./ specifies the file path.
• apt fetches and installs missing dependencies if required.

3. Installing .deb Files Using gdebi (Graphical & Terminal-Based Installer) 🖥️

gdebi is a lightweight tool designed to handle .deb installations by resolving dependencies.

Install gdebi First:

sudo apt install gdebi-core

Use gdebi to Install .deb File:

sudo gdebi package_name.deb

Example:

sudo gdebi google-chrome-stable_current_amd64.deb

4. Checking Installed Packages with dpkg-query 🧾

To confirm if the package is installed:

dpkg-query -l | grep package_name

Example:

dpkg-query -l | grep chrome

5. Common Errors and Troubleshooting 🚨

1. Missing Dependencies Error:

sudo apt --fix-broken install

2. Unmet Dependencies:

sudo apt install -f

3. Locked dpkg Database:

sudo rm /var/lib/dpkg/lock-frontend
sudo rm /var/lib/dpkg/lock
sudo dpkg --configure -a

6. Removing Installed .deb Packages 🗑️

Using dpkg:

sudo dpkg -r package_name

Using apt:

sudo apt remove package_name

7. Example – Installing Google Chrome 🌐

1. Download the Chrome .deb file:

wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb

2. Install using apt:

sudo apt install ./google-chrome-stable_current_amd64.deb

3. Run Chrome:

google-chrome

8. Example – Installing Visual Studio Code 🖋️

1. Download VS Code .deb file:

wget https://go.microsoft.com/fwlink/?LinkID=760868 -O vscode.deb

2. Install using gdebi:

sudo gdebi vscode.deb

3. Launch VS Code:

code

9. Verifying Installations ✅

dpkg -l | grep package_name

Example:

dpkg -l | grep code

10. Uninstalling .deb Files 🗑️

sudo apt remove package_name

Example:

sudo apt remove code