How can I open new tab on Firefox using command line (on Mac)?  I've tried open -a "Firefox" --args "-new-tab" "http://about:newtab".  This will not work; it just brings Firefox to the front.

And open -a "Firefox" http://about:newtab will open a new window on Firefox, but can't open a new tab on current window.


1 Answer 1


Maybe it's not exactly what you look for, but I manage to open a new tab using open -a "Firefox" "http://any.url". However, it doesn't open the about:newtab as you'd like it to.

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