Howto dpkg
==========
https://www.tecmint.com/dpkg-command-examples/

1. Install packages
dpkg -i package

2. List packages
dpkg -l package*

3. Remove packages
dpkg -r package

4. View the Content of a Package
dpkg -c flashplugin-nonfree_3.2_i386.deb

5. Check a Package is installed or not
dpkg -s flashplugin-nonfree

6. Check the location of Packages installed
dpkg -L flashplugin-nonfree

7. Install all Packages from a Directory
dpkg -R --install debpackages/

8. Unpack the Package but dont’ Configure
dpkg --unpack flashplugin-nonfree_3.2_i386.deb

9. Reconfigure a Unpacked Package
dpkg --configure flashplugin-nonfree