Install Local Debian (.DEB) Packages
sudo dpkg -i DEB_PACKAGE_with_location
Another simple way would be – Just go to the file on file browser. Type sudo dpkg -i on terminal and put an space
afterwards. Then drag the deb file on the terminal which will eventually get you the same code shown at first here.
https://localhost/smartupworld/list-installed-packages/
https://localhost/smartupworld/switch-windows-application-ubuntu/
https://localhost/smartupworld/install-kmplayer-media-player-ubuntu/