This tutorial is for those who use Ubuntu, Debian or a derivative of Debian Linux and have downloaded a .deb package that they want to install. Typically you can use synaptic, apt-get or aptitude. However, if the package is not available via the repositories you may need to download and install them yourself.
How to manually install .deb packages
Note: This process only installs the downloaded .deb package. If the package has dependencies, you may need to install them as well.
1. Press ctrl+alt+t to open a terminal window.
2. Download your chosen .deb package via wget or another method.
3. To install a deb package using dpkg. From the terminal type the following,
(replacing packagename with the name of the package).
sudo dpkg -i packagename.deb
Troubleshooting .deb dependencies
If you receive an error similar to the following;
packagename depends on otherprogram (>= 1:0.0.0); however: Package otherprogram is not installed
You’ll most likely need to install the otherprogram(s) before you can continue to install your .deb package.
You can install those dependencies by typing the following,
(replacing otherprogram with the actual program name)
sudo apt-get install otherprogram
Alternately, you might be able to use
sudo apt install -f
How to manually uninstall .deb packages
To uninstall or remove a program using dpkg, simply type the following,
(again replacing packagename with the actual package name).
dpkg -r packagename
How to find installed .deb packages using dpkg
To find or view installed .deb packages using dpkg, simply type the following
(replacing name with a word that should be in the packagename).
dpkg -l | name