Set up Franz for Ubuntu
sudo tar -xf Franz-linux-x64-0.9.10.tgz -C /opt/franz
wget "https://cdn-images-1.medium.com/max/360/1*v86tTomtFZIdqzMNpvwIZw.png" -O franz-icon.png
then sudo cp franz-icon.png /opt/franz
sudo touch /usr/share/applications/franz.desktop
then sudo vim /usr/share/applications/franz.desktop
paste the following lines into the file, then save the file:
[Desktop Entry]
Name=Franz
Comment=
Exec=/opt/franz/Franz
Icon=/opt/franz/franz-icon.png
Terminal=false
Type=Application
Categories=Messaging,Internet