Linux Firefox default sans-serif font
browser, cross-browser, firefox, fonts
Solution
If fonts are handled by fontconfig then they are defined in /etc/fonts. It seems the command `fc-match` does the mapping from 'serif', 'sans-serif', etc. to the actual fonts:
$ fc-match sans-serif
Vera.ttf: "Bitstream Vera Sans" "Roman"
$ fc-match monospace
VeraMono.ttf: "Bitstream Vera Sans Mono" "Roman"
Problem
Which font is the default `sans-serif` font in Linux? When I go in Windows in Firefox to Options > Font > Advanced I can see that the default `sans-serif` font is Arial, but in Linux it only shows `sans-serif` as a font by itself. Any idea how can I check which `sans-serif` font is this?