I followed the first and fourth comments of this post but I couldn't install firefox dev.
Actually I don't really know if the browser was installed, every step of the fourth comment seems to work, but when I tried use
gksu gedit /usr/share/applications/firefox-dev to create the icon the terminal returned the following error:
Command 'gksu' not found
I search and found out that
gksu is deprecated, so one alternative presented was
pkexec, and I tried:
pkexec gedit /usr/share/applications/firefox-dev.desktop
The termonal returned this error:
Unable to init server: Could not connect: Connection refused
(org.gnome.gedit:2744): Gtk-WARNING **: 22:07:54.667: cannot open display:
How I make sure that the firefox developer is installed and how do I open it from the terminal?
How to create an executable icon to it?