Trubls. Firefox is not broweser default. HELP

[Дима Нанышев]

Hi. My name is Dima and i am from Russia. Sorry my English. Downloads Sage with official site. I can not solve trubl. I want that default browser is firefox. Now default browser is Google Chrome. The mothod's in official site is not help me. Please help me. Thank's

[Volker Braun]

Run the following from the command line:

SAGE_BROWSER=firefox /usr/bin/sage -notebook