How to Install WeChat & WhatsApp in One App in Lubuntu 18.04 Bionic

3. Installing

Then to Set up Franz on Lubuntu
First, Access the Target, usually in the Downloads folder:
(But if downloaded with Firefox it can be instead into /tmp/mozilla*)

cd && cd Downloads

To Check that there is run:

ls . | grep franz

The grep Command Refine the output List showing only the entries Matching the Keyword.
(But if you are in Trouble to Find the Location on Terminal then See: How to Access Downloads Folder from Browser)
And to Setup Franz:

sudo gdebi franz*.deb

If No GDebi then First, execute:

sudo apt install gdebi-core gdebi

If Got “User is Not in Sudoers file” then see: How to Enable sudo