So, if you are wondering how to install Firefox developer edition on Debian. Here are the steps.
sridharrajs@Home:~/Downloads$ mv firefox dev-firefox
Now move the entire dev-firefox to opt directory
sridharrajs@Home:~/Downloads$ sudo mv dev-firefox/ /opt/Navigate to the
/opt/dev-firefoxand start developer edition using
sridharrajs@Home:~/Downloads$ cd /opt/dev-firefox
Note : If you want to create a shortcut for it in Gnome2 desktop. Read on. Holding Window key + Alt right click on the top panel. Select Add to panel
Select Custom Application Launcher
You will see a window where you need to enter the location of the installation.
After filling details, in my case looked like the following.
Say Close. Now you can see that Firefox developer edition icon appears in the panel. That's it.