sudo dpkg -i /path/to/deb/file
sudo apt-get install -f
# To install .deb
sudo dpkg -i package_name.deb
# To uninstall .deb (dpkg installed) packages
# remove it using Adept, or type:
sudo apt-get remove package_name
sudo apt install ./file_name.deb
# Added the relative file destination.
sudo apt install path_to_deb_file
#install downloaded .deb
sudo dpkg -i /path/name.deb
#install packages
sudo apt install package_name
Install a downloaded program in Ubuntu - Linux
sudo dpkg -i package_file.deb
//or
sudo apt install path_to_deb_file
sudo dpkg -i DEB_PACKAGE
sudo apt install ./file_name.deb
sudo dpkg -i path_to_deb_file
how to run.deb file in ubuntu