

deb packages from unofficial sources especially if it's not open source. There are two types of Debian packages: Binary packages, which contain executables, configuration files, man/info pages, copyright information, and other documentation. Those unofficial applications can be downloaded from the developer’s websites or git repositories and installed manually. Packages generally contain all of the files necessary to implement a set of related commands or features. Another reason that you'd like to install a local deb package would be their version on default package manager could be old and you'd like to get new version of them.

However many applications are not included in the Ubuntu or any 3rd party repositories. The Ubuntu repositories contain thousands of deb packages that can be installed either from the Ubuntu Software Center or from the command line using the apt. The same instructions apply for any other Debian based distribution as mentioned above. In this post, I will explain how to install. deb is the installation package format used by all Debian based distributions like Ubuntu, Kali, Linux Mint, Pop!_OS etc.
