Most often when creating different profiles in Firefox, you use them for various things. One profile might have all the web-developer tools and add-ons you need in order to be your geeky self, while profile number two has your gamer-add-ons, which you don’t want to mix. But what if you want certain add-ons to be global? So when you do create a second profile, you won’t have to reinstall the same add-on twice, or more. The answer? Installing things through the command line.
For instance, let’s take the add-on AdBlock Plus. Great add-on. I for one want it on every Profile. So instead of doing it through the browser-interface, installing it once for every profile, do it through the command line, globally.
Become root and grab the add-on:
$ su - # cd /root/ # wget https://addons.mozilla.org/downloads/latest/1865/adblock_plus-1.0.2.xpi
And then install it globally:
# firefox -install-global-extension /root/adblock_plus-1.0.2.xpiAnd presto, the addon should now be located in /usr/lib/firefox/extensions, available for all profiles.
Nifty huh?
