Pasted

# old way
# sudo apt-get install flashplugin-installer
 
# move to sources.list location
cd /etc/apt
 
# edit the sources.list
sudo nano sources.list
# NOTE: add contrib to the first source with main like
# deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted contrib
 
* install the plugin
sudo apt-get install flashplugin-nonfree