install using .deb file code example

Example 1: install deb file

sudo dpkg -i /path/to/deb/file
sudo apt-get install -f

Example 2: install .deb file in ubuntu

sudo dpkg -i package_file.deb

Example 3: install *.deb file in ubuntu

Install a downloaded program in Ubuntu - Linux
sudo dpkg -i package_file.deb
//or
sudo apt install path_to_deb_file