How to install .deb file in Ubuntu 24.10?

.deb files are Debian package files used to install software on Debian-based systems like Ubuntu. If you’re using Ubuntu 24.10, here’s how to install .deb files properly using the terminal and other tools.

Method 1: Install Using dpkg

If you’ve downloaded a .deb file (for example: package.deb), run:

sudo dpkg -i package.deb

If there are missing dependencies, fix them with:

sudo apt install -f

This command automatically installs any required packages that were not handled by dpkg.

Method 2: Install Using apt

A cleaner and dependency-resolving method:

sudo apt install ./package.deb

Make sure you’re in the same directory as the file, or give the full path:

sudo apt install /path/to/package.deb

The apt command will automatically download and install all required dependencies.

Method 3: Install Using gdebi (Optional)

If you prefer a lightweight graphical interface, install gdebi:

sudo apt install gdebi-core -y
sudo gdebi package.deb

This tool also handles dependencies cleanly, but it’s optional and not installed by default.

Bonus: Graphical Installation (GUI)

You can also install .deb files by double-clicking the file in your file manager. It will open in Ubuntu Software (or a similar package manager), allowing you to click Install.