I want to temporarily use Firefox in another languages so that menus and everything else in another language. How can I do that?
I have tried
firefox -no-remote -UILocale en-GB
but that still loads Firefox with my default locale (I have en-GB locale for Firefox installed).
I also found https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/565209 but I dunno if it's due to that.