This does not drop the First Run sentinel and thus doesn't prevent first run from occuring the 
                   next time chrome is launched without this flag. 

                               the default browser info-bar displayed.

I am running program which open "chromium-browser" with following command-line parameters in Linux. --incognito = Causes the browser to launch directly in incognito mode. ↪ --no-first-run = Skip First Run tasks, whether or not it's actually the First Run. Overridden by kForceFirstRun. This does not drop the First Run sentinel and thus doesn't prevent first run from occuring the next time chrome is launched without this flag. --disable-save-password-bubble --password-store = Specifies which password store to use (detect, default, gnome, kwallet). --password-store=basic --no-default-browser-check = Disables the default browser check. Useful for UI/browser tests where we want to avoid having the default browser info-bar displayed. --window-size = Specify the initial window size: --window-size=w,h --window-size=1024,1024 --app = Specifies that the associated value should be launched in "application" mode. Now I want to do the same thing with "firefox" browser. I need help to find firefox command-line parameter for firefox which is similar to chromium-browser. I searched firefox website but not able to find alternatives for same. Thanks in Advance.