How to completely 'sudo uninstall' Firefox please

[mahesh]

My Firefox browser keeps bugging out. I completely removed it with Synaptics, but that didn't help upon reinstall.
With the command line, what do I type into terminal to really completely uninstall it - uninstall everything associated with it so I can reinstall it - please.

I unserstand it is probably
sudo apt-get --purge remove package_name

but when typing "Firefox" for package_name, it doesn't work.... Must be another name?

     Code:

Code Select Expand

michael@michael-HP-EliteDesk-800-G1-SFF:~$ sudo apt-get --purge remove Firefox
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package Firefox
michael@michael-HP-EliteDesk-800-G1-SFF:~$